All posts by: Evelyn

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Multi-functional Experimental Leaching-Extraction-Electrowinning System

Application This multi-functional experimental leaching-extraction-electrowinning system is developed for wet metallurgy tests of non-ferrous and precious metals. It supports lab-scale conditional tests and process optimization for metal recovery, covering the hydrometallurgical extraction and recovery of copper, zinc, nickel, cobalt, gold and silver. It is compatible with raw materials including oxidized copper ore, sulfide copper ore, […]

Small Ball Mill with Air Classifier for Dry Powder Grinding

ZJH minerals introduces a precision-designed closed-circuit grinding system with a production capacity of 50 kg/h.  We have designed for our Canada client. It is Centered around a ball mill and equipped with a variable frequency air classifier, this system is specifically designed for the deep processing of steel slag and fly ash, enabling flexible production […]

Determination of Thickener Settling Area by Dynamic Settling Test

The thickener is an indispensable piece of equipment in mineral processing. For a long time, the conventional industrial practice has been to obtain settling velocities through static settling tests and then calculate the required area using the Coe-Clevenger or Talmage-Fitch equations. While this approach is suitable for many conventional slurries in engineering applications, a static […]

Application of Stainless Steel Electrowinning Cells in Gold Extraction

Application Electrowinning is widely adopted to recover gold from cyanide solutions desorbed by activated carbon. It delivers high-quality finished products and has little impact on the composition of desorption solution. Featuring a fully enclosed operation process, it minimizes precious metal loss and boasts higher safety performance than cementation method, serving as a core procedure in […]

Methods for Calculation of Thickener Tank Settling Area

In the mining industry, thickener tanks are primarily used for dewatering concentrates and tailings in ore processing plants, thickening backfill tailings for underground backfill systems, and slurry thickening before and after long-distance slurry pipeline transportation systems. It can be said that the thickener is an indispensable piece of equipment in mineral processing flowsheets. Consequently, the […]

Types of Laboratory Test Sieves

Ultrasonic Test Sieve Ultrasonic vibrating sieve is a high-efficiency sieving equipment that uses ultrasonic technology to generate high-frequency vibrations to achieve precise separation of materials on the screen mesh. It is widely used in chemical, food, pharmaceutical and other industries, especially suitable for processing agglomerated and highly viscous powders. This equipment features high sieving efficiency, […]

Gold Recovery Process Design from Copper Tailings with 1.2 g/t Au

This process design is conducted for gold recovery from copper tailings with a gold grade of 1.2 g/t. The process is comprehensively designed based on the occurrence state of gold, tailings particle size, associated minerals, environmental protection requirements and production economy. The following is the process flow configuration scheme based on industrial practice. 1. Analysis […]

Zinc Cementation Gold Extraction Process

Zinc cementation gold extraction is a classic and widely used hydrometallurgical technique, mainly applied to recover gold by cementation from gold-bearing cyanide leach solution. Basic Principle Based on the metal activity series, zinc is more reductive than gold. It can reduce gold ions in cyanide solution to metallic gold, which precipitates out, while zinc itself […]

Characteristics of Thickener Tank Types

As a key piece of equipment for solid-liquid separation, the thickener plays a vital role in mineral processing. Utilizing the principle of gravity sedimentation, it concentrates low-density slurries into high-density underflow while recovering clarified overflow water. Throughout this entire process, there is a large component often regarded as a “supporting role” that is, in fact, […]

Why Choose High-Pressure Grinding Rolls (HPGR) for Crushing Hard Materials

Applicable Material Hardness Hard metallic ores and recycled waste materials: tungsten ore, tungsten sand, tungsten carbide scraps, hard alloy waste, magnetite, hematite, chromite, manganese ore, ilmenite, as well as copper, gold, silver, lead-zinc ores and tailings containing high-hardness gangue Highly abrasive non-metallic ores: quartzite, silica, granite, basalt, diabase, gneiss, corundum, silicon carbide, garnet, diamond tailings […]

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