Tag Archives: Hindustan Zinc

Metso to deliver Peracidox scrubbers to Hindustan Zinc sulphuric acid plants

Metso is to deliver four Peracidox™ scrubbers to Hindustan Zinc to minimise sulphur dioxide emissions at its plants in India. The scrubbers will be installed at the sulphuric acid plants at the company’s zinc smelters in Chanderiya and Debari.

“Metso has delivered numerous Peracidox scrubbers around the world. The ones to be delivered to Hindustan Zinc have been customised for the Indian market to comply with the stringent local environmental regulations and to meet the needs of the Indian customers,” Hannes Storch, Vice President, Metals and Chemical Processing at Metso, said.

Metso’s Peracidox scrubber efficiently reduces the residual SO₂ of tail gases, minimising emissions. The solution, an oxidative removal process, features high removal efficiency and ease of control with minimised mechanical equipment. It can be installed as part of a new plant or in existing ones.

The Peracidox scrubber can be used, for example, to reduce SO₂ emissions downstream in existing sulphuric acid plants.

Sandvik to supply battery-electric vehicle fleet to Hindustan Zinc’s SK Mine

Sandvik and Hindustan Zinc have signed a Memorandum of Understanding for supply of a battery-electric underground equipment fleet to be used at Sindesar Khurd Mine to help it achieve its carbon neutrality ambitions.

Deliveries are scheduled to begin in the March quarter of 2023, with the fleet being the first underground battery-electric fleet to be deployed in India.

The equipment to be delivered includes an 18-t-payload LH518B loader and three 50-t-payload TH550B trucks (pictured) as well as a DD422iE drill rig with Sandvik’s unique and patented ”charging-while-drilling” technology, the company said.

Sandvik will also provide batteries, charging systems and a full-range on-site battery and equipment service team. The loader and the trucks will be equipped with AutoSwap, Sandvik’s patented battery self-swapping system, capable of battery changeout in a few minutes.

“Aligned with our expansion strategy for battery-electric vehicles, I’m delighted to sign this agreement with Hindustan Zinc to deliver the first battery equipment fleet in India,” Henrik Ager,  President of Sandvik Mining and Rock Solutions, said. “This is a testament to both the pioneering ambitions of Hindustan Zinc and the technological maturity of Sandvik BEV products.”

The TH550B truck and LH518B loader are based on the Artisan™ technology, which Sandvik acquired in 2019, and enriched with the latest Sandvik mining technology, contributing to overall productivity improvements of up to 20%, the OEM said. The machines will be equipped with state-of-the-art battery telemetry solutions enabling automated, on-premise as well as remote health and performance monitoring.

The Artisan driveline and battery solutions have been field tested with more than 500,000 operating hours.

Hindustan Zinc accelerates growth plans as it partners with industry leaders

Hindustan Zinc Ltd (HZL), a Vedanta Group Company and the world’s second largest integrated producer of zinc and lead, is in acceleration mode, embarking on aggressive expansion and collaboration plans with technology and innovation partners from across the globe.

One of the first mining companies to commit to going “Net Zero” by 2050, it has a strong focus on ESG reinforced by plans to deploy battery-electric vehicles, tap into more solar and wind power potential and recycle waste heat from its captive power plants. Such ambitions are being delivered with up to $1 billion of finance in the next five years to “go green” and, by 2025, achieve focused sustainability goals.

At the same time as it is looking to become an ESG leader, it is boosting its mine and metal production by leveraging “smart mining” and an extensive resource and reserve base.

IM put some questions to Arun Misra, Hindustan Zinc CEO, to find out how the company intends to deliver on its lofty ambitions.

IM: HZL’s 2021 financial year to March 31, 2021, was characterised by record production volumes and profitability; how were you able to achieve such results given the COVID-19-affected constraints on your operations?

AM: The uncertainty has evolved continuously. If I give you an example, we started the year with the uncertainty of COVID only; that is people getting infected leading to absenteeism. It was so contagious, it spread so fast, half of our workforce were down. So, that struck us heavily, but, nevertheless, because we had experience of last year, and this time there was no lockdown of industry, we were able to figure out how to manage and we did manage well, compared to last year’s same quarter, which was also COVID-affected. We had introduced various measures to change the way of working to ensure a safer working environment for the employees. We also got our workforce vaccinated along with their families to further minimise the risks associated with the pandemic.

Hindustan Zinc CEO, Arun Misra, says Hindustan Zinc has been at the forefront of ensuring personal health, be it of its employees or local communities

Furthermore, the automation and digitalisation efforts at Hindustan Zinc are equipped to better withstand these testing times while ensuring quick revival to a normal level of operations.

IM: During the height of the pandemic, HZL – like other socially responsible mining companies – supported communities within or close by to its operations. Can you highlight some of the actions you took over this period and what impact they had?

AM: We at Hindustan Zinc have been at the forefront of ensuring personal health, be it of our employees or local communities. We have gone beyond and extended our support to the state of Rajasthan and the nation at large by contributing significantly to the PM Cares Fund and Rajasthan Chief Minister Relief Fund.

To meet the requirement of oxygen during the second wave of the pandemic, we had set up an oxygen bottling plant at our Dariba unit (Rajsamand district) in a record time of five days and had supplied over 14,000 cylinders of medical oxygen. We even arranged 500 oxygen concentrators to be imported and distributed for use across the state.

We had provided an insulated vaccine van to the Udaipur district medical health office to support a smooth vaccination drive and extended support to the local health administrations, by disinfecting villages by spraying and fumigating with sodium hypochlorite solution and providing medical gear like masks, sanitisers and PPE to local communities.

We even constructed an 8,000 sq.m air-conditioning dome hospital, based on German technology, which has a capacity of 100 beds – including 20 ICU beds – to accommodate patients and provide them with essential COVID treatment and medical facilities.

IM: ESG is obviously a major focus area for HZL, as these examples illustrate. Where specifically are you investing in your mining, power and smelting operations to make them more environmentally friendly?

AM: As a COP26 business leader, we have always been active in tackling the repercussions of climate change and have a strong focus on reducing carbon emissions. We are pioneers in India, declaring our ambition to convert all our mining equipment to battery-operated electric vehicles and will invest $1 billion over the next five years to make our mining operations environmentally friendly.

We are continuously expanding our renewable power of 274 MW of wind and 40 MW of solar under our greenhouse gas reduction goals by converting 50% of our total power to renewable forms in the next five years. We are among the only two metal and mining companies globally – and among four Indian companies – to be part of the coveted CDP (Carbon Disclosure Project) ‘A List’ 2020.

Furthermore, we have even published our first Task Force on Climate-related Financial Disclosure (TCFD) Report this year and have also joined the Taskforce on Nature-related Financial Disclosures (TNFD) forum to understand nature-related risks and opportunities and accelerate the transition towards a nature-positive and carbon-neutral future.

We have set Sustainability Development Goals to 2025 for ourselves where we are aiming towards sustainable operations for a greener tomorrow.

Hindustan Zinc has embarked on a major growth push at its mining operations with six ongoing expansion projects that will see over 100 km of tunnels developed for underground infrastructure and ore access

IM: At the same time as this, HZL has embarked on a major growth push at your mining operations with six ongoing expansion projects that will see over 100 km of tunnels developed for underground infrastructure and ore access. How are you able to balance your sustainable expansion plans with pledges to reduce your overall footprint?

AM: We strive for operational excellence and cost efficiencies and continue to stay on the growth track while being equally cognisant of our environmental, social and governance commitments, as well as our sustainability goals. We are leveraging more digitalisation and automation than we ever have, as well as engaging with technology leaders to do ‘more with less’.

The SmartDrive equipment we plan to use enables higher productivity, lower operating costs and, most importantly, zero local emissions, featuring in-built energy recuperation technology to make the most of regenerative braking energy during downhill driving and deceleration.

Being a power-intensive business, our key focus is always on reducing dependence on non-renewable sources of energy and enhancing our renewable power base.

IM: How important has it been to partner with like-minded technology and solution providers to ensure you meet these ambitious goals? Can you provide some examples here?

AM: We always look for partners who align with our philosophy of running sustainable operations to achieve company goals. We don’t need one-off solutions from companies to meet our targets; we need companies that will engage throughout our medium- and long-term projects and provide an element of customisation that factors in the realities of operating in our underground mines. We look for global partners to work with us where we exchange ideas, insights and knowledge with them in our growth journey.

We believe in providing opportunities to our business partners to leverage collaboration on technology, innovation and digitalisation, for long-term value creation and mutual growth.

To support our expansion plan, it is crucial for Hindustan Zinc to collaborate with mine development and operation partners who share a similar vision to ours, which is to leverage cutting-edge technology to create a positive impact on the entire mining fraternity. We are currently working with companies like Sandvik, Epiroc, Normet, Barminco, RCT, Siemens, etc as our global partners. We have engaged with them to provide end-to-end solutions rather than sourcing a specific supply or service.

Hindustan Zinc has given an equal platform for women engineers in its mining operations, appointing India’s first female underground mine manager in 2021

IM: You have already stated a goal of 1.5 Mt/y of zinc production in the upcoming years and extending your lead as India’s largest integrated zinc-lead producer; what is your vision for the company to 2030 and beyond?

AM: We are excited about our next phase of expansion to take mining capacity from 1.2 Mt per annum to 1.35 Mt/a. We will surely cross 1 Mt and we should be above our guidance if we achieve the desired run rates in our third and fourth quarters.

While our growth plans are a key part of the company’s future, we are also focused on becoming the leading zinc-lead-silver producer from an environmental, social and governance point of view. Our DJSI Ranking of being among the Top 5 companies in the metal and mining sector is testament to this. We are already winning significant awards for our ESG and CSR efforts, and expect this recognition to continue and grow as we head towards mapping out our 2025 sustainability goals.

Also, the mining value chain is changing across the globe and more consumers are becoming aware of the origins of the products they buy and the emissions that come with their production.

To collaborate with Hindustan Zinc on its green growth mission, email [email protected]

GHH India’s contract mining arm wins plaudits for work with Hindustan Zinc

GHH India’s recently established contract mining arm, GHH Bumi Mining Service, has notched up its first significant award, being recognised by Vedanta Group/Hindustan Zinc Ltd (HZL) for the work it is doing at the Zawar Mala zinc-lead underground mine in Rajasthan, India.

In a recent online event, GHH Bumi Mining Service, established late last year, was named as the recipient of the Best Performing Business Partner by the companies.

The award winner was chosen out of all business partners and recognised a job well done, GHH said.

Over the last six months, GHH Bumi has been carrying out contract mining at Zawar Mala, and was presented the award, GHH says, based on excellent performance involving all contract mining activities, including those related to safety, production and asset optimisation.

Since January, GHH BUMI has been responsible for production and mine development with more than 350 employees at Zawar Mala. For this purpose, the company has access to more than 20 LHDs, dump trucks and drilling rigs from the GHH Group.

Dr Jan Petzold, CEO of GHH Group, said: “With this award, we as GHH Group see ourselves confirmed in our efforts as a reliable business partner for HZL – a cooperation that started almost four years ago with the supply of mining machinery and has resulted in being awarded as mining contractor and OEM.

“This is a special incentive to be able to conclude the second mine developer and operator contract with HZL, which is currently in preparation.”

The latest generation of GHH mining equipment, with its new dump truck MK-42, LF-14 and LF-10 LHDs as well as two FM 2.3 boom drill rigs from GHH group company, Mine Master, are on their way to India and are expected to be on site beginning of August, GHH said.

GHH says GHH Bumi is also currently working on preparing for the expansion of the Mochia Balaria Decline project, where a rapid development proposal is under way.

FLSmidth to deliver dry-stack tailings solution at Hindustan Zinc’s Rajpura Dariba mine

FLSmidth has been contracted to deliver an integrated dry-stack tailings solution and a paste fill plant to Hindustan Zinc’s lead-zinc mine in Rajpura Dariba, Rajasthan.

The solution will ensure environmental sustainability and significant process water recovery, as well as reduce the footprint of the tailings storage facility, the mining OEM said.

The new order, which was booked in the December quarter, includes design, engineering, procurement, supply of equipment and the commissioning for integrated dry tailings and stacking along with tailings paste fill plant. FLSmidth will also supply two Automatic Filter Presses (AFP-IV™, pictured), two E-Disc filters and one 26 m diameter High-Density Thickener as the main pieces of equipment. The project is expected to be completed by February 2022.

This new order follows a previous tailings-related order for Hindustan Zinc at its Zawar mine site in 2018.

Hindustan Zinc operates beneficiation plants at Rajpura Dariba and Sindesar Khurd, which both discharge tailings to the same tailings pond. The tailings dam was reaching capacity for conventional wet tailings deposition and so Hindustan Zinc needed a way to resolve this issue, FLSmidth said.

The solution the company required would involve creating a small dry-stack tailings area with minimal environmental and physical footprint and also a method to backfill the mine by using an adjusted dry filter cake mix.

By choosing FLSmidth’s hybrid technology – a combination of the E-Disc filter and the AFP-IV Automatic Pressure Filter – Hindustan Zinc will now be able to achieve this and recover around 85% of process water, according to FLSmidth. This recovered process water can be reused by the process plant located at the mine site with minimum operating and capital expenses.

The cake from the E-disc filter will contain below 16% moisture and can be used for mine backfilling, while the cake from the automatic filter press, with below 12% moisture, can be stacked on the surface in a safe and compact manner, FLSmidth says.

“The solution will also significantly reduce industrial water consumption, something that is of heightened importance in water-scarce areas, such as Rajasthan,” the company said. “The site will also have zero effluent discharge, further boosting its sustainable mining goals.”

Manfred Schaffer, Mining President, FLSmidth, said the order was another strong “proof point” for the quality and flexibility of the company’s technology for filtration and engineering solutions for tailing management.

“This project resolves the customer’s challenge through optimum utilisation of available space and ensures the paste backfill requirements are met with the lowest possible operating and capital costs,” he added. “Importantly, it also secures a high level of reusable water for the mine site, which helps their sustainability efforts and supports our own MissionZero ambition.”

FLSmidth FerroCer wear panels increase uptime at Hindustan Zinc operation

FLSmidth’s FerroCer® Impact wear panels have proven their worth in the mineral processing circuit at Hindustan Zinc’s Rampura Agucha operations in Rajasthan, India, having significantly outlasted the previous manganese liners the lead-zinc mine was using.

By the end of 2018, the mine couldn’t say exactly just how good FerroCer wear panels were as they were still in place over a year since installation.

However, by March 2019, it was confirmed the FerroCer liners had completed about 480 days (16 months approximately) in operation and had withstood some 2.45 Mt of lead-zinc ore conveyed through the U-13 tripper chute, located after the primary crusher at the mine.

This is a significant improvement on the previous 40 mm-thick manganese steel liners, which had a life span of only 23-25 days, according to FLSmidth.

The constant wear on these liners meant the material handling system needed to be frequently shutdown so the worn-out liners could be replaced with new manganese steel liners, which weighed about 50 kg each.

“Because of the elevated location of several chutes, replacement of the liners required safety preparations (such as scaffolding and other access and handling arrangements), with five to six workers required to get inside the chutes to handle the liners,” FLSmidth said.

FLSmidth visited officials at the Rampura Agucha mines in June 2017 and recommended FerroCer wear panels to address the high wear issues in the material handling chutes.

“Each panel comprises a set of abrasion-resistant ceramic inserts enclosed in a matrix of malleable steel, which ensures only the top surface of the insert is exposed to material impact,” FLSmidth said. “The sides of the inserts are tapered within the matrix, keeping them in place and preventing material particles and fluids from damaging the panels.”

Some in-situ results from the 220-day mark showed the wear on the panels measured only 8-10 mm and had withstood around 1.5 Mt of lead-zinc ore conveyed through the U-13 tripper chute.

“This means FerroCer outlasted the previous panels by over 10 times, meaning a much longer replacement cycle,” FLSmidth said.

Clearly delighted with this outcome, Hindustan Zinc is now looking to use FerroCer impact wear panels across its high-impact wear locations, according to FLSmidth.

Praveen Bhardwaj, Assistant General Manager (Mechanical), HZL – RA Mines, Rajasthan, said: “FerroCer has reduced maintenance time due to the much longer replacement cycle, eliminated possible damage to the mother plate and spillage of material due to the highly abrasive nature of ore, and significantly reduced safety hazards. HZL intends to install FerroCer impact wear panels in all the high impact wear locations.”

The results at the Hindustan Zinc site follow on from results from two mines in Australia. One mine operated for more than a year without replacing its wear liners and the other site is on the same track, approaching its first year without the need for liner replacement.

Meanwhile, in a Peruvian copper mine, 24 smaller and lighter FerroCer panels, each made of steel plates with ceramic inserts, replaced six generic liners. After a total of 12.6 Mt passed, with a feed of 7,500 t/h, wear was no more than 3%, FLSmidth said.

“At that rate, FerroCer lasts at least 10 times longer than the most expensive and recognised wear liner on the market.”

RCT brings teleremote options to Hindustan Zinc’s Rampura Agucha mine

Autonomous solutions specialist RCT has entered into its first automation project in India, commissioning its technology on machinery at Hindustan Zinc’s Rampura Agucha zinc-lead mine in Rajasthan province.

The agreement with Hindustan Zinc Limited and its mining services provider Barminco will see ControlMaster® Guidance Automation installed on two Cat R2900 underground LHDs at the mine. These loaders will now undertake teleremote mining in open stopes developed by Barminco.

Barminco, in February, was awarded a three-and-a-half-year underground mining services contract at Rampura Agucha. The mine, meanwhile, is currently undergoing an expansion to boost production to 5 Mt/y of ore.

RCT will install two underground ControlMaster Automation Centres, as well as four ControlMaster Area Access Cabinets into mine stopes, as part of this package. These will collectively enable machine operators to safely manage the machines away from the mine face, according to RCT.

The Automation Centres will also be equipped with Multiple Machine Selection and Multiple Machine Control options, enabling a single operator to manage both machines at one time, according to RCT.

The project represents the first time RCT has deployed its proprietary digital communications network RCT Connect into a mine site anywhere in the world, the company said, adding that RCT will carry out training programs to empower local operators and maintenance personnel then machine servicing works on an ongoing basis.

Hindustan Zinc after improved safety, productivity with Epiroc’s Mobilaris solution

Hindustan Zinc, India’s only zinc-lead-silver producer, has selected Epiroc to equip its flagship Rampura Agucha mine with Mobilaris Mining Intelligence™ (MMI).

A decision support solution for mine safety and efficiency, MMI enables superior situational awareness and is designed to visualise and support mining operations in all its complexities, in real-time, Epiroc says.

Hindustan Zinc has introduced various technologies and innovations and has obtained success in enhancing safety, efficiency and exploration, according to Epiroc.

Back in 2017, the miner looked to automate many of its operations, acquiring Epiroc drill rigs, LHDs, haul trucks (including the MT65) and exploration equipment to be used in five of its mines in northwestern India. The automation and other high-technology features of the equipment were enabled through the common Rig Control System, with most machines are equipped with the telematics solution CERTIQ.

Following the latest MMI order, Sunil Duggal, CEO, Hindustan Zinc, said: “We are continuously making efforts to develop better, connected and intelligent mines. The partnership with Epiroc will support our direction to develop safer and more productive operations at Rampura Agucha mine”.

Ulla Korsman-Kopra, Global Business Manager, Automation and Information Management at Epiroc, said the company would support Hindustan Zinc’s operational (mining) improvement processes with the MMI solution. “The globally-acclaimed features will take Hindustan Zinc’s operations to the next level of performance gains,” she said.

The MMI portfolio features situational awareness, short interval control, including machine data integrations, and traffic awareness promises to get maximum productivity and efficiency out of a customer’s mine, according to Epiroc.

“Thanks to the openness and transparency of the MMI solution, integrations with mixed fleet machines, sensors and more will create the foundation for vital real-time analytics,” Korsman-Kopra said.

The system is expected to be operational during once the networking is up and running at the Rampura Agucha mine.

Rampura Agucha is the second largest zinc mine in the world, according to Hindustan, with production of 3.9 Mt in the company’s 2018 financial year. It has a zinc-lead reserve grade averaging 15.7% Zn+Pb, with total reserves of 46 Mt as of March 31, 2018.

The ongoing underground mine project is being developed with a vision of producing 5 Mt/y of ore and includes a main production shaft of 955 m depth, 7.5 m diameter and hauling capacity of 3.75 Mt/y; two ventilation shafts, two declines from surface and paste fill plants, according to Hindustan.

Barminco wins extension at Hindustan Zinc-owned Rampura Agucha zinc-lead mine

Ausdrill’s recently added subsidiary, Barminco, has been awarded an underground mining services contract at the Rampura Agucha zinc-lead mine in India from Hindustan Zinc worth approximately A$100 million ($71 million), the ASX-listed company says.

Hard-rock underground miner Barminco has operated at Rampura Agucha for Hindustan, a subsidiary of Vedanta Limited, since late 2016. The new underground mining services contract is for a three-and-a-half-year term, subject to review and mutual agreement of rates after the first year.

The scope of work includes the extension of development works that were being provided under a recently completed contract, plus the addition of production work in the Barminco-developed area of the mine. Under the contract, Hindustan will provide capital equipment and consumables. Barminco will commence work immediately, Ausdrill said.

Barminco CEO, Paul Muller, said: “We are very pleased to have been awarded a contract that extends our operations at the Rampura Agucha mine with an expanded scope to include production works. We look forward to deepening the relationship we have built with Hindustan Zinc over the past few years by delivering on this extended scope of works both safely and efficiently.”

Rampura Agucha is the second largest zinc mine in the world, according to Hindustan, with production of 3.9 Mt in the company’s 2018 financial year. It has a zinc-lead reserve grade averaging 15.7% Zn+Pb, with total reserves of 46 Mt as of March 31, 2018.

The ongoing underground mine project is being developed with a vision of producing 5 Mt/y of ore and includes a main production shaft of 955 m depth, 7.5 m diameter and hauling capacity of 3.75 Mt/y; two ventilation shafts, two declines from surface and paste fill plants, according to Hindustan.

Loadscan measures up for Hindustan Zinc’s Rajpua-Dariba and Zawar mines

Hindustan Zinc is using Loadscan’s load volume scanners (LVS) to monitor material at two of its mines in India, the equipment manufacturer says.

At its Rajpua-Dariba mine, Hindustan Zinc’s oldest mine, it has a custom-mounted Loadscan (LVS-3CMX model) underground to measure ore, where it is crushed before taken to the surface by lift. Within this mine, there’s also a block-mounted portable unit (LVS-3BMP) positioned at the portal to measure trucks as they come to the surface. Another two custom-mounted scanners (LVS-3CMX) were purchased for the Zawar mine.

Pavan Kaushik, Vice President and Head of Corporate Communication at Hindustan Zinc, said the Loadscan units have been helpful to improve operational performance by “managing haul-back to reveal our true shift tally”.

“We can now accurately calculate net volumes delivered for processing,” Kaushik said. “Time is also saved by minimising paperwork; there’s no manual data entry, driver records or after-shift record sorting.”

Increased trucking “factors” has led to production gains, including lower cost per tonne of material hauled, optimising truck loading and improved productivity,” he added.

Loadscan says: “The Loadscan LVS is the original non-contact, automated ‘drive-through’ truck load measurement instrument. It’s an affordable, effective alternative to heavy-duty truck scales for the monitoring, tracking, and management of load data.

“Compared to conventional weighing systems, Loadscan boasts greater accuracy in payload measurements, and, unlike permanent weighbridge installations (that require extensive site works), the LVS is quick and easy to set up so trucks can be scanned without delay.”

As the target vehicle drives under the scanner, the LVS scans the load and creates a 3D model or ‘surface profile’. By comparing this profile with vehicle details stored on file for the same vehicle when empty, the LVS is able to calculate the load volume to a proven accuracy of +/- 1% or to the point of resolution which is 0.1 m³.

All the mining trucks in Hindustan’s fleet are fitted with RFID tags, allowing the LVS units (which feature tag readers) to automatically identify each truck as it passes under the scanner and match it to its load.

By working from volume rather than weight, Hindustan Zinc obtains a more accurate measure of its materials, according to Loadscan. “The LVS literally ‘sees’ the load, whereas volume measurement converted from the weight generated from a weighing system is commonly affected by environment factors such as moisture and varying material densities.”

The custom mount head on the LVS-3CMX was the preferred option for the various sites due to its ability to be mounted virtually anywhere, either directly, or by custom mount, according to Loadscan. “This makes it great for attaching on mining portals, tunnels or for attaching to the side of buildings.”

The Loadscan LVS custom mount truck measurement units can be hard wired to a site office or run via a dedicated Loadscan kiosk.

The Loadscan LVS-3BMP is the portable option for large or long-term portable truck measurement projects where there may be a need to move the load scanning location, Loadscan says. The unit is mounted on a pre-cast concrete mounting block, making it easy to move around site by forklift or by lifting from its mounting points.