The Rockster Jaw Crusher R800 crushes lead ore in Chunya to a size of 0-40 mm using screenbox and return belt.

The P.B. Mining Company Ltd. was formed in 2014 and specializes in the exploration of lead glance named Galena. Galena, a natural mineral form of lead sulfide, is the most important ore of lead and usually contains about 1 to 2 percent silver, a byproduct that far outweighs the main lead ore in revenue. Because of its low melting point, it is easy to liberate by smelting.

The mining company has many different sites in the Mbeya region in the United Republic of Tanzania, working in a territory of about 30 sq. mi. Exploration works are carried out by excavation as well as using vertical and inclined prospecting drilling, a driving of trenches, vertical and inclined holes.

Excavation and Crushing of this Valuable Rock

One of P.B. Mining Company's sites is placed near Chunya (Mbeya region, Tanzania). The company started to work on this site in May 2017 with the excavation of the upper layers of the soil and taking out the first samples of ore for analysis. After positive results of the geological tests, P.B. started the big extraction.

The Rockster R800 jaw crusher is needed to crush the Galena to a fraction of 0-40 mm. To define this final grain size, the company used the screenbox RS83 and return belt RB75 on the crushing plant. After that it changed the crushing units and continued crushing the 0-40 mm material with the impact crusher R900 to a fraction of 0-5 mm. This material is sent to a leaching company to separate the pure ore, which is then used for the production of concentrates based on polymetallic ores.

Saving Acquisition, Wear and Transport Costs by Using the Duplex-System

Rockster representative Maksim Perminov commissioned the machine and did the training and instruction at the customer's place in Tanzania.

“After finding out the requirements of the P.B. Mining Company, I was sure that the Rockster Duplex-System would be the best solution to receive the final grain quality they need with the lowest costs possible. The uniformity of the ore mass is very important for them. As the Galena rock has a very high abrasiveness, it requires a primary crushing on the jaw crusher to reduce the wear of blow bars when working on a rotary crusher,” Perminov said.

The P.B. Mining Company is highly satisfied with its “2-in-1” crushing plant — it is the right system for it to get the 0-5mm final grain without the need of purchasing, maintain and transport two separate crushers. By using the jaw as primary crusher, it saves wear and maintenance costs. The secondary impact crusher also guarantees the best product shape and quality so that it finally can crush the Galena in the most ecological and cost efficient way, according to the company.

For more information, visit www.rockster.at.

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