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2014-04-29 10:32:34

A quarry operator in the Libyan needed to expand their crushing and screening plant in order to cope with an increase in chip and sand demand from the market. Material is granite. They already have one primary and a secondary crusher. Material comes out from the impact above 20mm. the secondary crusher was being operated at very tight settings, but still was unable to cope with the fines requirements. Final products they required is 0-5mm; 5-10mm; 10-20mm (total 3 products). Vertical Shaft Impact Crusher Solution After consultation with we Mineral’s engineer, they would like to add a we VSI crusher in the existing plant. This machine will carry the material from the existing plant of (20-40mm) and reduce it to 0-5mm; 5-10mm; 10-20mm. The we VSI crusher is designed to produce very good particle shape and a high preparation of fines. After commissioning, the capacity of up to 150TPH easily, which exactly meet the quarry owner’s initial plan. Gold mining in South Africa has been the principal focus of black economic empowerment, resulting in a changing ownership structure. Gold mining industry boomed with the increase in the price of gold and the worldwide economic slowdown, investment in gold has increased. Demand for gold, particularly from India and China, also increased. Up until a few years back South Africa was the world's largest gold producer. China surpassed South Africa as the world’s largest producer in 2007. Nowdays, gold mining in China, Australia and the United States are also well developed, beside South Africa. uth Africa's main gold mining area concentrates on the Witwatersrand Basin, which has produced more than 41000 t gold in 100 years, and remains the greatest unmined goldsource in the whole world. To reshape this industry, new projects, technology and approaches to the organisation of work, some commercial innovations and better labour relations are already started. The Witwatersrand, South Africa 's most important gold mine, is a gold placer deposit, unlike most others in the world. Gold mines in South Africa host gold by grits and conglomerates. South Africa also have other smaller gold mining places which have gold in the form of Archaean greenstone belts. The main gold producing greenstone belts are the Barberton Greenstone Belt and the Kraaipan greenstone belt. The Barberton greenstone belt is situated in the Mpumalanga province, just north of Swaziland. The Kraaipan belt is located west of Johannesburg, near Kuruman. Other smaller belts exist in the Northern Province, but have been worked sporadically. Gold in the rock ore were very low, in order to extract gold, the ore must be processed by gold mining equipment. In this process, many gold mining types of equipment are used, such as gold refining and purifying equipment, but the ore firstly must be crushed and grinded, thus the gold is separated from the ore.
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