It contains silver flotation flotation flotation-gravity concentration and flotation-cyanidation. The flotation-cyanidation is the most important technological process. With flotation concentrate obtained silver. After another grinding performed cyanide leaching, washing counter, zinc replacement electrolytic deposition and finally manages silver bullion. This technology has Xinhai high silver recovery and good economic benefits.
Recovery of silver and other minerals associated metal is mainly used. The silver material is divided into two types: gold and silver mineral ore and lead-zinc-copper associated.
The production line of flotation-cyanidation is the flotation cell, stirrer tank leaching, zinc replacement system and two floor (or third floor) of thickener cleaning. The production line is with high efficiency, low power consumption, high capacity and good economic benefits.
To improve the recovery rate of the silver flotation, xinhai developed the mineral processing in three methods. Firstly, due to the thickness features of the silver particles to dissociate silver totally to improve the recovery rate. Secondly, use neutral or weak alkalinity pump as well as the sodium carbonate as regulators to improve the floatability of silver. Thirdly, sodium n-butyl xanthate and sodium butyl aerofloat are mix-used to enhance the collecting ability to the silver. [Process Flow Advantages] Similar to other mineral processing methods, silver flotation process also need to prepare materials bef separation. That is to say, the ore should be grinded and classified to suit the flotation fineness. Xinhai also adopts the multi-layer thickener to dewater in three stages, and exchange the cyaniding process of one leaching and one dewatering into two of each, which highly improving the recovery rate of the silver. Xinhai also use cyaniding to process Hydrogen-containing wastewater and to recover sodium cyanide, which proves to be a good method to solve the wastewater pollute. The alloy gold can adopt electrolyte equipment to dissociate silver, and get gold and silver ingot to improve the economic efficiency.
Xinhai floating is equal to other methods. We must make good material preparation, ie, with grinding and classification, size is appropriate for flotation concentration. In addition, Xinhai used esperador multi-storey three times to wash. Changed after leaching and cyanide lavación twice, improving silver recovery. With this method, treats wastewater and recovering sodium carbonate, solving the influence of wastewater disposal in the environment. Gold mining the electrolytic separation is used to separate silver and swap items in gold and silver bullion, increasing the economic benefits of enterprise.
For example, the case of silver ore in Inner Mongolia, plant scale is 500t / d practical production capacity is 750t / d. Metallic minerals have pyrite, chalcopyrite, silver, gold and natural mineral. For original production problems, Xinhai performs transformation technique and applies processing flotation-cyanidation. With flotation concentrate obtained silver. After another grinding performed cyanide leaching, washing counter, zinc replacement electrolytic deposition and finally manages silver bullion. That leaves the fluid and easy to operate process also improves certain number of equipment and system technology flotation reagents.