Alluvial gold mines is various in kinds and widely distributed. According to the transport distance, the alluvial gold mines can be divided into residual placer gold, slope placer gold mine, alluvial placer gold mine, riverbed impact placer gold mine, and coastal placer gold mine. Among them, the riverbed impact placer gold mine is common. According to handling force medium, the alluvial gold mine can be divided into aeolian placer gold mine, ice-forming placer gold mine, and aquatic placer gold mine. According to the era of transport, the alluvial gold mine can be divided into deep placer gold deposit, terraced placer gold mine, and river beach placer gold mine. There is very low content gold in the alluvial gold mine. It needs all kinds of gold processing equipment for processing and enrichment. The gravity separation has the characteristic of high-efficiency, energy-saving and environment-friendly. It is the main alluvial gold mining method. Generally, gold and various kinds of associated heavy minerals can be recovered through gravity separation. Then gold and associated heavy sand minerals can be separated through gravity separation, flotation, magnetic separation, and electrostatic beneficiation.
Based on the above problems, the gold tailings disposal methods and comprehensive utilization of gold tailings is extremely urgent. At present, the common gold tailings disposal methods and comprehensive utilization mainly include the following ways: gold tailings reprocessing method, gold tailings dry stacking method, production of building materials, mine filling, reclamation and making field.
At present, the common chrome extraction processes mainly include gravity separation, magnetic separation, electric separation, flotation, gravity-magnetic separation process. Below, let’s take you to learn about each chromite ore processing process.
The extraction of gold by cyanidation mainly includes CIP and CIL processes, which are similar but different. Let’s see the differences between the CIP process and the CIL process.
Refractory gold ore refers to the part of gold ore that cannot be extracted effectively by the conventional cyanide leaching process after the fine grinding. Therefore, how can we improve the gold leaching effect of the refractory gold leaching process?
According to the different associated minerals, the chrome mining processes include the single gravity separation, the single magnetic separation, gravity separation-magnetic separation process.
In general, the main mineral of natural silica sand and quartz sandstone is quartz, and some other impurity minerals are often associated with it, such as mica minerals, feldspar minerals and iron and aluminum oxide minerals. However, the mixing of these impurities greatly reduces the value of quartz sand and affects the quality of products. Therefore, it is necessary to carry out the impurity removal for the silica sand. Here are the silica sand purifying process and equipment for the silica sand processing plant.
Due to the different types of gold ores, the gold extraction methods from ore are different, mainly including gravity separation method, flotation method, amalgamation method and cyanide leaching method, resin in the pulp method, carbon paste adsorption method and heap leaching method. For some types of gold ores, the combined gold extraction methods from ore are often used in the gold processing plant.
The gravity separation method is an ideal and efficient alluvial gold mining process to extract gold from the sand. And the reasonable alluvial gold equipment is mostly the joint operation of several kinds of gravity separators.
At present, the common quartz mineral processes mainly include the physical quartz mineral process and chemical quartz mineral process. Among them, the physical quartz mineral process includes washing, classifying and desliming process, scrubbing process, magnetic separation process, and flotation process. The chemical quartz mineral process is the acid leaching process.
In general, the single magnetite separation process usually adopts the weak magnetic separation process, while the polymetallic magnetite iron ore and mixed magnetite iron ore are usually separated by the combined process consisting of a variety of separation methods, including magnetic separation process, flotation process, gravity separation process, magnetization roasting magnetic separation process, reduction roasting magnetic separation process.
The common process used in the extraction of iron from limonite mainly include a single separation process and joint separation process.
According to ore types, raw ore properties, mine scale and application, the common barite mining processes mainly include handpicking, gravity separation, flotation, magnetic separation, and combined barite mining process.
At present, with the depletion of high-grade gold reserves, the research on middle and low grade, refractory gold ores and the enhancement of traditional techniques used for the extraction of gold have become the mainstream trend of gold extraction in the world. The common processes used for the extraction of gold mainly include cyanide gold extraction, flotation and gravity separation. Next, we will explain to you one by one the gold extraction processes.