Limonite ore is an important iron ore that exists widely in many countries and regions. To maximize the use of this valuable resource, effective beneficiation processes are required to improve recovery and grade. This article will introduce several common limonite ore beneficiation methods, including gravity separation, magnetic separation, flotation separation and combined process.
There are different types of iron ore in nature, mainly divided into magnetite, hematite, limonite, siderite, ilmenite and chromite. The mineral processing technology adopted by different types of ores are of course very different.
When purifying powdered quartz, it generally needs to be processed by mechanical scrubbing, magnetic separation, flotation separation, acid leaching and calcination to remove impurities and associated minerals. The following will introduce you to the detailed powder quartz sand separation and purification technology.
Rare earth ore beneficiation uses a variety of different methods to enrich rare earth resources to obtain high-grade rare earths. In general beneficiation, the mineral processing method of rare earth ore is selected according to the difference in properties of rare earth and associated minerals. Among them, flotation separation is the main method, and there are also gravity and leaching methods, and magnetic separation is mainly used to cooperate with the above-mentioned separation methods. The following editor will focus on the first three rare earth ore beneficiation processes.
Fluorite ore is a mineral that is easy to flotation separation. The flotation process is an important fluorite ore beneficiation method. There are some key technical parameters that will affect the fluorite mineral flotation separation effect in actual production, such as pH and temperature of ore pulp, ore particle size in flotation process, hardness of ore pulp water, flotation reagents, etc. We will discuss the influences caused by these parameters.
With the continuous development of technology, at present, the concentrator has a variety of separation technologies for copper sulfide ore, namely: rapid step-by-step priority flotation process, low alkalinity flotation process, and polymetallic copper ore flotation process. The beneficiation process of copper sulfide ore will be introduced in detail below.
Associated gold in polymetallic ores often contains minerals such as arsenic and carbon, which have a certain impact on the flotation of gold ores. The beneficiation methods include cyanide leaching, flotation separation, gravity separation and so on. In this article, we will answer three questions one by one: how to deal with gold-bearing sulfide ores, how to deal with arsenic-containing gold ores, and how to deal with organic carbon-bearing gold ores.
More than 20 kinds of tungsten minerals and tungsten-containing minerals are known in the world, among which wolframite and scheelite are economically valuable minerals. At present, the beneficiation methods of wolframite are mainly gravity separation and flotation. The beneficiation method of scheelite is mainly flotation. Because the physical and chemical properties of ores are different, the beneficiation methods used are also different.
Barite ore contains a variety of gangue minerals, including quartz, calcite, dolomite, etc. These gangue minerals are easily activated in flotation separation process, and have similar surface properties to barite, making separation difficult. Therefore, enlarging the floatability difference between barite and gangue minerals is the key to barite flotation separation. Flotation reagents can change the surface properties of minerals and enhance the hydrophobicity difference between minerals, so as to realize the separation of barite.
Tin minerals have a relatively high density, and bulk tin minerals can be easily recovered through traditional gravity separation processes. However, due to the fragility of tin minerals, over-crushing easily occurs in the grinding process, resulting in the loss of most of the fine-grained tin minerals in the tailings. In the recovery of tin ore, flotation is an effective means to recover fine-grained tin minerals and reduce the loss of tin metal.
The selectability of chrome ore is affected by many factors, such as the grade, purity, purity of immersion, and the composition and quantity of symbiotic gangue minerals. The chromium ore with different properties will be processed by different mineral beneficiation technologies. At present, the chrome ore beneficiation process often used in the concentrator includes: mechanical mineral processing technology, fire method enrichment technology and chemical mineral processing technology. The following will introduce several chrome ore beneficiation processes and equipment.
Nickel deposits in the world can be divided into three categories: copper-nickel sulfide ore, laterite nickel ore and weathered crust nickel silicate ore. At present, nickel sulfide ore is the main source of nickel metal. Although the extraction of nickel from nickel oxide ore is becoming more and more popular, nickel sulfide ore is still the main source of nickel. The main reason is that economical mechanical beneficiation methods can be used to extract nickel metal from nickel sulfide ore, but nickel oxide ore cannot.
