The roller crusher, a mine machinery, is also known as the twin roll crusher. It is mainly used for crushing ores. The machine has the advantages of small size, large crushing ratio (5-8), low noise, simple structure and convenient maintenance, uniform particle size of crushed materials, low over-crushing rate, convenient maintenance, sensitive overload protection, safety and reliability. Applicable to coal, metallurgy, mining, chemical industry, building materials and other industries, more suitable for large coal mines or coal preparation plant raw coal (including gangue) crushing. Tooth roll crusher has large crushing capacity. The motor and reducer are connected by a spacing-limited hydraulic coupler to prevent power overload and sensor overload protection. It is safe and reliable. The teeth roller spacing is adjusted by hydraulic pressure, and the teeth roller bearings are lubricated centrally. Tooth shape optimization design, pull shear selection, crushing, high efficiency, low consumption and uniform grain size.
The roller crushers are rolled by two mutually rotating rollers. It is composed of motor, bracket, fixed roller, moving roller and safety spring. The roller surface is mostly smooth. The bearing of the movable roller can be moved along the frame and supported by a strong safety spring. When a particularly hard object falls in, the bearing can be removed and the object spits out. Before normal operation, the gap between the two rollers should be adjusted with gaskets to ensure the crushing ratio. Suitable for medium crushing aggregate.
Gold Leaching( carbon in leach) processis widely used in the newly built gold leaching plants in recent years, and a lot of plants are changing into CIL as well. GoldLeaching CIL process is suitable for the treatment of oxidized gold ore with low sulfur content and mud content. It is unsuitable for the gold ore with high-grade silver. Generally, the proportion of gold and silver should not exceed 1:5. The best conditions for CIL process in China: PH=10-12, sodium cyanide concentration is not less than 0.015%, the particle size of activated carbon is 1.0-3.35mm, the type of carbon is coconut shell activated carbon, and the slurry concentration is 40-45%. Gold Leaching Methods: flotation, carbon pulp adsorption, gravity beneficiation, and so on. These three methods of the leaching process and gold mining equipment manufacturing can be completed independently. Gravity separation and flotation are the common beneficiation methods used in gold ores, and great improvements have been made in the beneficiation technology and equipment. The mainstream gold extraction methods is generally by crusher, then comminuted by the ball mill, and then through gravity separation and flotation technology, the concentrate and tailings are extracted, chemically refined, and refined to produce gold.
Gold Leaching( carbon in leach) was developed from CIP( Carbon In Pulp), is characterized by less process flow, timesaver in the leaching process, thus reducing the production expenditure. Besides, advanced extraction technology improving the efficiency of gold extraction. The CIL production line is wider use than CIP in the mineral industry. Gold Processing Steps, Introduction of gold CIL production line: A. RAW MATERIAL PREPARATION: vibration feeder- conveyor belt- crusher -Crushing- grinding- leaching- desorption electrolysis- tailings dehydration B. LEACHING and elimination: The thickened material is leached from eight agitators; a qualified reagent is added to the first set of agitators, and the activated carbon is lifted from the last set of agitators to the second set of agitators via an airlift to resist electric currents The activated carbon from the second set of agitators is raised to a carbon screen to obtain gold-loaded carbon, and the remaining slurry is returned to the first set of agitators And then into the tailwater treatment phase. C. Tail Water Treatment: The tailings will be raised to pressure filter, filter cake known as tailings, through the belt conveyor and truck transport to the yard, filtrate into the circulating water tank for reuse. D. AURIFEROUS CARBON TREATMENT: Gold powder is obtained by batch treatment of gold-containing carbon by desorption and electrolysis equipment. The dust enters the furnace and turns to the bar. The gold-containing carbon after electrolysis can be returned to the final stage of the reprocessing flowchart.