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Bauxite is a mineral composed of gibbsite, boehmite or diaspore, and its main chemical component is alumina (Al₂O₃). Bauxite is the main raw material for the production of metallic aluminum, and is also widely used in refractory materials, abrasive materials, chemical industry and other fields. With the rapid development of the aluminum industry, high-grade bauxite resources are decreasing, and the development and utilization of low-grade bauxite is becoming more and more important. This article introduces low-grade bauxite beneficiation method!Details>>
Antimony is an important metal element, silvery white, with high melting point, high density and good thermal stability. It is widely used in alloys, flame retardants, batteries and semiconductors. However, the properties of antimony minerals are complex and its dressing is difficult. This article mainly introduces the types of antimony ores and the common antimony ore dressing process.Details>>
Gravity separation is one of the commonly used process methods in gold mineral processing plants. Due to its own advantages such as low energy consumption, low production cost and low environmental pollution, it is used in both placer gold mines and rock gold mines. At present, the gold production recovered by gravity separation accounts for 12% to 15% of the global production. Let's take a closer look at the application of gravity separation in gold mineral processing operations, including gravity separation methods, the location of gravity separation equipment in gold processing plants and gravity separation equipment.Details>>
Pre-selection operations, also known as preparatory work or pretreatment operations before beneficiation, refer to a series of pre-treatment processes for gold ore before the start of the gold beneficiation process in order to improve beneficiation efficiency, reduce costs, protect the environment and increase gold recovery. The purpose of pre-selection operations is to improve the physical properties of the ore, dissociate gold minerals from gangue minerals, and create favorable conditions for subsequent beneficiation processes.Details>>
Gold, as a precious metal, has always played a vital role in human history. It is not only a symbol of wealth, but also has a wide range of applications in jewelry making, electronics industry, aerospace and other fields. Desorption electrolysis is the process of purifying gold after gold selection. The gold adsorbed on the gold-carrying carbon is desorbed by a specific desorption liquid, and then the gold is deposited on the cathode by electrolysis in the electrolytic cell, thereby achieving efficient recovery and purification of gold.Details>>
Gold leaching is an important gold beneficiation process. It uses specific chemical reagents to dissolve the gold in the ore into a form containing A solution of gold is then extracted from the solution through further processing. The gold leaching process has the characteristics of high efficiency and good selectivity. It can extract gold from low-grade ores and improve the utilization rate of gold resources.Details>>
Gravity gold selection is an ancient and effective beneficiation technology. It is a beneficiation method based on the density difference between gold and other minerals to separate gold from impurities such as gangue in a gravity field or centrifugal field. The density of gold is relatively high, usually around 19.3g/cm³, while the density of most gangue minerals is relatively small, and this obvious difference provides a physical basis for gravity gold selection. Generally, gold ore particles with a density greater than that of heavy media will sink, while gangue minerals with a density less than that of heavy media will float up, thus achieving separation.Details>>
Full-mud cyanidation carbon-in-pulp gold extraction process (Carbon in Pulp, CIP for short) is a modern mineral processing process for extracting gold from gold-bearing ores. It mainly adds sodium cyanide solution to the gold-bearing ore after crushing and grinding (to meet the particle size requirements) for stirring and leaching, so that the gold dissolves to form a gold-cyanide complex, and at the same time, activated carbon is directly added to the cyanide slurry, and the gold is recovered by the adsorption of activated carbon on the gold-cyanide complex.Details>>
There are many types of gold mines in nature. Considering the actual situation of ore dressing, gold mines can be divided into poor sulfide gold mines, polysulfide gold mines, gold-bearing polymetallic ores, gold-bearing copper ores, etc. Depending on the type of ore, the treatment methods used by the beneficiation plant are also different. For example, flake, leaf and plate-shaped gold are mostly recovered by flotation or cyanidation. The effect of recovering the above-mentioned types of gold by gravity separation or amalgamation is not good, and then the recovery of granular or spherical gold is good. Therefore, in actual production, according to the characteristics of various types of gold ores, one or more technologies combined with gravity separation, flotation, cyanidation, amalgamation and other technologies should be selected for gold ore beneficiation. The following article will introduce you to the gold ore dressing technology based on the above technologies.Details>>
The gold-loaded carbon electrolysis process is the main process in the cyanide gold extraction process. Whether it is the carbon leaching method or the carbon slurry method, the process uses activated carbon to adsorb gold (gold will be absorbed into the pores of activated carbon). At this time, the activated carbon that adsorbs gold is called gold-loaded carbon. Then the process of using the gold-loaded carbon to extract gold through electrolysis is the gold-loaded carbon electrolysis process.Details>>
High sulfide gold ore contains a high proportion of sulfide minerals such as pyrite and arsenopyrite, in which the gold grade is relatively low, and the natural gold particle size is fine, usually tightly wrapped by sulfide minerals such as pyrite. The characteristics of this type of ore are that gold and sulfide are closely related, resulting in a low gold recovery rate in the direct leaching process, and high consumption and production costs of gold leaching agents. Therefore, for high sulfide gold mines, direct cyanide leaching is not recommended.Details>>
In the process of gold beneficiation, a large amount of gold tailings will be produced. However, due to the backward technology in the early stage, some useful gold will be discharged with the tailings, and these gold still have recoverable value. Recycling through reasonable process methods can not only improve resource utilization, but also reduce environmental pollution. Gold tailings gravity separation process is an effective recovery method.Details>>
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