Mine resources are nonrenewable. So how to fully use them has been a hot topic in mining industry. To fully use mine resources means their tailings shall be treated properly, too. In recent years, innovative technologies can achieve the recycling of tailings. It's proven that through these technologies recycling mine tailings is a profitable business.
Kazakhstan is abundant in gold ores. Around 1900 tons of gold ores have been explored. Kazakhstan's gold reserve ranks TOP 9 around the world. Through years of exploitation, piling amount of gold tailings is increasing sharply. In late 2016, a gold mining branch in Kazakhstan decided to look for machines to process gold tailings. And after various investigations and inspections, the branch bought 3 screen-typed double-geared roller crushers from SBM.
The first step of recycling gold tailings is to knock and hit tailings to make them loose. Because gold tailings of the customer company have been placed for as long as 40 to 50 years, tailings are hardened. What's worse, the winter in Kazakhstan is almost endless and freezing, which means the sedimentary tailings have higher humidity and hardness compared to common tailings. The customer had strict output demand for pre-processing of tailings. After multiple analyses of material, climate and customer demands, instead of using ordinary impact crushers and jaw crushers, SBM's engineers recommended screen-typed double-geared roller crushers to the customer.
What surprises us was that the customer did not come to our headquarters from initial negotiation, contract signing to equipment delivery. How could he trust in SBM so much? Perhaps the answer lies in SBM's overseas office in Kazakhstan. Our colleagues in Kazakhstan visited the customer company several times, showing the customer SBM's production strength and experience. Therefore, the customer decided to cooperate with SBM finally.
Material: Gold tailings
Input Size: 300mm
Output Size: 40-50mm
Equipment: 2SBMC75300 Screen-type Double-geared Roller Crusher (3 units)
2SBMC Series Screen-type Double-geared Roller Crusher has big processing capacity. It's a brand-new classifying crusher. Different from traditional roller crushers which crush materials by hitting and squeezing, 2SBMC Series Screen-type Double-geared Roller Crusher crushes materials by stretching and reading. High torque, low speed of gear and specific pick shape can, taken by this crusher, help get required granularity and reduce over-crushing rate to the minimum. 2SBMC Series Screen-type Double-geared Roller Crusher is suitable for processing medium-hard materials in coal, electricity, mine, metallurgy and chemical engineering industry.
1. Materials are crushed under the action of shearing and stretching. And crushing parts do not need to rotate at a high speed. So, the wear is small and much energy can be saved.
2. Adjustable center distance of rollers makes materials crushed under stipulated granularity. Meanwhile, the rate of excessive crushing is low. This kind of crusher can not only break materials but also screen them. Simplified system helps reduce investment costs.
3. The crusher owns high crushing strength, big crushing capacity, adjustable rigidity and granularity. Besides, this crusher has an obvious advantage on crushing of sticky materials.
4. Online automated central control and intelligent automated lubrication device ensure safe production.
Screen-type double-geared roller crusher is usually used to process coal, not metallic ores. To satisfy the development demands of coal industry, Chinese coal industry firstly introduced the MMD screen-type double-geared roller crusher from England.
Different from metallic ores, raw coal (especially in large open pit mines) has big granularity and high output. The main purpose of crushing is to achieve transportation convenience. Screen-type double-geared roller crusher has high processing capability and big feed port which can effectively avoid excessive crushing and bring excellent product granularity. The massive rate is 5-7% higher than that of traditional crushers. Especially, this kind of crusher is small and light. The supporting structures are, therefore, simple. Screen-type double-geared roller crusher is usually adopted by mobile crushers and semi-mobile crushers.
On the basis of absorbing MMD's technologies, there are more scientific and reasonable innovations on 2SBMC Series Screen-type Double-geared Roller Crusher such as strengthened quick-wear parts and adjustable center distance of rollers. The transmission system, motor and bearings are from famous brands. Excellent product quality guarantees the safe production in freezing environment (-50℃).