What does the gold mine beneficiation production line process include? Introduction to the gold ore production line process!

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Gold ores are mainly natural gold. Metal ores are mostly associated with pyrite, arsenic pyrite, marcasite, arsenopyrite, etc. Gangue minerals are mainly quartz, chalcedony, sericite, organic carbon, etc. Mainly, if you want to effectively recover gold, you need to process gold to separate it from other gangue minerals. The process mainly includes gold materialcrushing and screening-grinding and classification-separation (flotation, Gravity separation, cyanidation)The following editor will focus on introducing the process of gold ore beneficiation production line!

1. Gold mine crushing and screening production line process

Crushing and screening is one of the essential links in every mineral processing plant. The main purpose is to crush the large ore blocks after mining. After being crushed to a certain particle size, it is easy to enter the next step.

General gold ore beneficiation crushing and screening processes can include one-stage crushing and two-stage crushing methods. The intermediate minerals are screened by a screening machine and qualified. And unqualified minerals, minerals that meet the particle size requirements are screened and then enter the grinding stage, while unqualified minerals continue to return to the crusher for crushing.

Gold ore concentrators mostly use jaw crushers for coarse crushing, standard cone crushers for secondary crushing, and short-head cone crushers for fine crushing. Small and medium-sized gold processing plants mostly use a two-stage and one closed-circuit crushing process, while large-scale gold processing plants mostly use a three-stage and one closed-circuit crushing process.

2. Gold ore grinding and classification production line process

Grinding is to further refine the gold ore after crushing. Chemical operations make the gold ore particle size finer to meet optional requirements. Generally, gold ore beneficiation requires one or more stages of grinding and classification. Different grinding stages require different classification options. If one stage of grinding is used, Overflow ball mill + spiral classifier, if more than two stages are used, the first stage of grinding will be lattice ball mill + hydraulic vortex For the flow device and second-stage grinding, choose the configuration of overflow type + spiral classifier. After crushing, the products are sent to the ball mill for grinding, and the products are classified. Qualified materials enter the next step, while unqualified materials are returned to the ball mill for re-grinding.

3. Gold ore separation production line process

The gold ore separation production line needs to be determined according to the properties of the gold ore , there are currently several selection methods including flotation, gravity separation and cyanidation.

Gold mine flotation production line: It is a method of sorting minerals based on the differences in their flotability based on the chemical properties of the materials on the surface of the mineral particles. Generally, flotation is mostly used for the separation of rock gold ores. It mainly adopts two processes: Priority flotation of gold ore and Mixed flotation of gold ore. The flotation gold concentrate produced is then smelted to obtain finished gold.

Gold mine gravity separation production line:According to their different densities, gold mineral ions in the medium (water, air and Heavy liquid) receives the action of fluid power and mechanical force, which causes the minerals to be loosely stratified and separated, so that the mineral particles are separated by themselves. Generally, gravity separation is mostly used in placer gold beneficiation operations. In placer gold, gold exists in the form of single natural gold with a density greater than 16 tons per cubic meter. The density difference between it and gangue is large, so gravity separation is very effective. However, gravity separation will not be used as a separate method. It is often combined with other mineral processing processes. In the grinding and classification circuit, jig and hydrogenation operations are used to obtain qualified gold concentrate. Generally, equipment such as Jig, Spiral Chute and Shaking Table can be used for gold re-selection.

Gold ore cyanide production line: Refers to a method of extracting gold using cyanide as a leachate, with stirring and cyanide extraction. There are two types of gold extraction methods: gold extraction and percolation cyanidation. Among them, stirred cyanidation is mostly used to treat gold concentrate obtained from flotation or full mud cyanidation. The carbon slurry gold extraction process (CIP) and carbon leaching gold extraction process (CIL) are used. ; Percolation cyanidation is used to treat low-grade gold-containing oxidized ores (such as placers and loose and porous gold-containing minerals). The ore dressing process generally adopts a pool leaching gold separation process or a heap leaching gold separation process.

The above is an introduction to the gold ore beneficiation production line process. In the actual mineral processing plant, the gold ore after separation is still Dehydration treatment is required. The gold concentrate is dehydrated using a concentrator to obtain gold mud, which then enters the smelting system; the gold tailings are passed through a variety of dehydration equipment to meet the user's dehydration requirements, and then the tailings are dry stacked or directly processed. Selling can not only effectively reduce problems such as dam breaks and pollution caused by tailings, but also improve the comprehensive utilization rate of tailings and increase some funds for the company.

Xinhai Mining can carry out gold ore beneficiation test, gold ore beneficiation process design, < strong>Construction plan design of the mineral processing plantand Gold mine complete set of mineral processing equipmentProduction Manufacturingetc. If you have any needs, please feel free to consult us!