Tag Archives: crushing and grinding

W Resources crushing ore at La Parrilla tungsten-tin mine

Just over a week since confirming mechanical completion of the La Parrilla crusher plant, W Resources has fed the first mined ore into the circuit at its tungsten-tin operation in western Spain.

Michael Masterman, Chairman of W Resources, said: “First ore into new crusher was achieved on December 18, 2018, ahead of the January 2019 target and is a great credit to the team at La Parrilla.”

The crushing circuit at La Parrilla, supplied by Metso Minerals’ Portugal division, has been engineered to minimise creation of tungsten fines and is designed to process 350 t/h of ore, according to the mining company. It is made up of a C130 jaw crusher and secondary cone crusher, both with vibrating grizzlies prior to size reduction, and two tertiary cone crushers in closed circuit with a double deck banana screen.

La Parrilla is envisaged as a scalable project, starting up at 2 Mt/y to produce some 2,700 t/y of tungsten concentrate and 500 t/y of tin concentrate, before an expansion to 3.5 Mt/y and beyond.

LOESCHE vertical roller mill to soon start up at Chinalco JV copper plant

A new LOESCHE vertical roller mill is in the process of being assembled at Aluminium Corp of China’s (Chinalco) copper smelting plant in the southern Chinese province of Fujian.

The three-roller mill will be operated by Chinalco’s Southeast Copper Ltd subsidiary and is able to grind 100 t/h of copper matte to a fineness of 20% with a sieving residue of 0.074 mm, according to LOESCHE.

Chinalco is managing the project as a joint venture with the provincial government of Fujian. The plant, in Ningde Zhangwan Industrial Zone, will be completed in the second half of 2018 and is due to produce 400,000 t/y of copper.

The LOESCHE mill has already been delivered and is now in the process of being assembled, the company noted.

The contract partner of LOESCHE and the planner of this plant is Changsha Nonferrous Metallurgy Design Institute Co Ltd from Changsha, China.

BHP looks for alternative service option on Wescone W300 sample crushers

Volt Power Group subsidiary Wescone Distribution Pty has been advised by BHP that the mining major no longer requires Wescone crusher repair services for its fleet of Wescone W300 sample crushers.

The two have had a supply and service relationship for the past 25 years, but Wescone said BHP had decided to use an alternative engineering services business to service its crusher fleet using what it called “non-OEM components for repair and service”.

As recently as May/June, Wescone sold a total of six new W300-3 sample crushers to BHP as part of ongoing negotiations which included a proposal to adopt a rental supply business model to “ameliorate the capital cost impact of the purchase”, Volt said.

“BHP confirmed their desire to purchase the new crushers and advance good faith negotiations to conclude and ongoing related service contract,” the company added. To date, these discussions have not resulted in a successful agreement.

While Wescone is leaving the door open for BHP as a future customer, it is already working on improving W300 sample crusher wear parts.

“Testing has confirmed the updates will deliver a significant improvement in the strength and expected durability of the W300-3 sample crusher,” Volt said.

The W300-3 crusher’s main applications include iron ore, gold, diamonds, nickel, and glass. According to Wescone, the W300-3 is the world’s smallest gyratory crusher, weighing in at just 230 kg, and offers both the best reduction ratio in a single pass and best gyratory crushing action for maximum efficiency.