We sent a substantial amount of quartz gold ore to a mill for processing. After a couple hundred tests on the material an average grade was calculated. After milling for several days the mill says there is way less gold in the ore than what had been estimated.
Ore ball mill sometimes called ore grinding mill, is generally used in mineral processing concentrator, processing materials include iron ore, copper ore, gold ore, molybdenum ore and all kinds of nonferrous metal ore. The core function of the ore ball mill is to grind the materials, and also to separate and screen different mineral materials, and to separate the tailings, which is very important to improve the quality of the selected mineral materials.
Ball mill and rod mill are suitable for different materials 1. Selection by material39;s hardness Ball mill has a strong adaptation of material, and it is suitable for grinding hard materials, such as slag, iron ore, copper ore, etc. Rod mill is suitable for grinding brittle material, such as rare metals. 2. Selection by required particle size
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Ball mills are commonly used in the manufacture of Portland cement and finer grinding stages of mineral processing. Industrial ball mills can be as large as 8.5 m in diameter with a 22 MW motor, drawing approximately 0.0011% of the total world39;s power . However, small versions of ball mills can be found in laboratories where they are used for grinding sample material for quality assurance.
Ball Mill Shell Dimensions VS Motor Sizes In all ore dressing and milling Operations, including flotation, cyanidation, gravity concentration, and amalgamation, the Working Principle is to crush and grind, often with rob mill amp; ball mills, the ore in order to liberate the minerals.
For your reference, the grinding concentration of ball mill should better adjust to 72% 82%. 4 Regrinding sand. Regrinding sand is a kind of ore with unqualified particle size but close to qualified after grinding process, which is returned to the mills for regrinding.
Ball mill is the key equipment for grinding materials. those grinding mills are widely used in the mining process, and it has a wide range of usage in grinding mineral or material into fine powder, such as gold, iron，zinc ore, copper, etc.
June 10, 2020
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