How to Purify Limonite 20, How to Purify Limonite

Process: The actual dry separation of limonite is to use limonite dry separation equipment to beneficiate and purify limonite, and the early advantage of using limonite dry separation equipment is that better economic benefits can be harvested through smaller inputs in the early stage.

Process: Limonite is crushed, screened, classified, and magnetically separated.

The biggest advantage of limonite dry separation equipment is that it does not use water, and the whole production process can be sorted without relying on water, which does not pollute the water source.

Equipment: Limonite dry separation equipment Some characteristics of limonite separation:

1. When the embedded particle size of the ore is coarse, the ore and gangue can be well dissociated.

2. There is a large magnetic difference between the state of minerals and gangue.

3. Better dissociation of iron and gangue in the case of rough crushing of ore.

Limonite contains fewer metallic elements, so refining gold requires a complex series of chemical and metallurgical processes. Here's how:

1.Crushing: Limonite ore is broken into small pieces, and then the ore with different particle sizes is separated by a vibrating screen.

2.Leaching: The ore is put into a solution containing cyanide, so that the metal elements and cyanide are combined to form gold cyanide ions, and then the solution containing gold cyanide ions is separated by filtration and other methods.

3.Adsorption: The solution of gold cyanide ions is adsorbed to the surface of activated carbon by adsorbing hidden slippery agents such as activated carbon, forming a composite of metal ions and adsorbents.

4.Desorption: Activated carbon and other adsorbents are put into a sulfuric acid solution, and the metal ions and adsorbents are separated by electrolysis or chemical methods to obtain a solution containing metal ions.

5.Precipitation: The solution containing metal ions is added to a precipitant such as sodium hydroxide to form a precipitate of metal ions, and then separated by centrifugation and other methods.

6.Smelting: The precipitation of metal ions is smelted at high temperature to remove impurities and obtain pure gold.

It should be noted that this is only a basic method of refining gold, in fact, different ores need to be extracted by different stoves. In addition, extracting gold carries certain risks and needs to be carried out under strict safety conditions.

In addition to iron, limonite also contains a small amount of precious metals such as gold and silver, but its content is generally very low. To extract the gold in it, it needs to be separated and purified by chemical methods.

First, limonite is ground into a fine enough powder, and then chemical agents such as hydrochloric acid are added to cause a reaction to turn gold into water-soluble chloroauric acid. Next, the impurities in the solution are removed to bring the chloroauric acid purity to a certain level.

Finally, a reducing agent, such as sulphur dioxide or hydrogen, is added to reduce chloroauric acid to gold. So as to obtain the high-purity production of gold. However, the extraction of gold requires a certain cost and technical content, so it is generally only carried out in ores with relatively high gold content and lead dates.

Summary. Limonite is a common type of iron ore whose main component is ferrous oxide. Industrially, limonite can be decomposed in two ways:

1.Thermal reduction method: Limonite is heated to a high temperature and reduced gas (such as CO, H2, etc.) is introduced to cause a reduction reaction to generate iron and water vapor.

Limonite is a common type of iron ore whose main component is ferrous oxide. Industrially, limonite can be decomposed on a silver basis by two methods:1

Thermal reduction method: the limonite skin is quietly heated to a high temperature and a reducing gas (such as CO, H2, etc.) is introduced to make it undergo a reduction reaction to generate iron and water vapor.

2.Acid leaching method: limonite powder is mixed with dilute sulfuric acid or hydrochloric acid and other strong acids, and heated to make the skin burn its first grip high dissolution reaction. Subsequently, the impurities in the solution are removed through precipitation, filtration and other steps, and finally pure ferrous oxide is obtained.

Can it be decomposed alkalinely.

Limonite can be decomposed by alkaline decomposition, but this method is not commonly used in industry. The alkaline decomposition method is to react limonite with a strong base such as sodium hydroxide or potassium hydroxide to cause a decomposition reaction to produce ferrite and water. The equation for the reaction gear width is as follows:

2fe2o3 + 6naoh → 2na4feo4 + 3h2o。Although the alkaline decomposition method can obtain ferrite lines with high purity, it is not commonly used in industry because it uses a large number of strong alkalis, which will cause environmental pollution problems and the operation process is relatively complex. In contrast, thermal reduction and acid leaching are more economical, simple, environmentally friendly and have a wider range of applications.

Jiangxi Hengcheng beneficiation equipment**** Here is an introduction to the new limonite beneficiation method, I hope it will be helpful to you.

The main component of limonite is ferric oxide, which belongs to weakly magnetic iron ore, with poor magnetic permeability, and limonite has a high degree of oxidation, easy to mud, and some limonite contains a large amount of argillaceous, and it is necessary to carry out ore washing operations before beneficiation to ensure the smooth progress of the beneficiation process.

The conventional limonite beneficiation method is mainly gravity separation, flotation method, strong magnetic separation method, the most commonly used is gravity separation, gravity separation method limonite separation has the advantages of high beneficiation efficiency, high beneficiation index, no pollution, low energy consumption, small equipment investment, low operating cost and so on. In the past, the shaker was often used as the main limonite gravity separation equipment, so the beneficiation index did not reach the ideal level.

The new limonite beneficiation method uses the latest mine diaphragm jigger to separate and purify the coarse, medium and fine grain embedded limonite, and the beneficiation effect is remarkable, and has been put into use in many countries and regions, and has been a complete success.

The new limonite beneficiation method is to determine the ore crushing particle size according to the embedding characteristics of limonite, and then wash and purify it through a jig of different selected particle sizes to obtain the final concentrate. Under normal circumstances, the embedded particle size of limonite is coarse, and a higher degree of monomer dissociation can be obtained by crushing, because limonite is easy to mud, in the process of beneficiation, it is necessary to try to avoid over-grinding mudding caused by grinding, and try to use fine crushing effect when fine grinding is required, and it is not easy to grind through the rod mill for fine crushing.

The new mining diaphragm jigger can effectively process coarse, medium and fine limonite with 0-50mm particle size, and has a significant effect on limonite beneficiation with obvious specific gravity difference in the effective separation grain size range, with high separation accuracy and high beneficiation efficiency, and has been popularized and used in many regions and countries, with energy-saving, high-efficiency, environmental protection and other beneficiation advantages, which has changed the situation that it is difficult to distinguish and improve the grade of weakly magnetic iron ore.

The new limonite beneficiation method is mainly to crush and screen the raw ore according to the ore and embedding results, and screen out the limonite material with high monomer dissociation degree and divide it into different particle sizes into jigger for sorting, the jigger can separate limonite with three particle sizes of 0-8, 8-25, 25-50mm, and the concentrate and tailings after jig separation enter the dewatering screen respectively, and then be transported to the concentrate and tailings plant through the belt conveyor after dehydration.

Limonite (i.e., hematite with water in its chemical structure;

Limonite rich ore (TFE50 or more) can be washed by lump ore;

Limonite lean ore (less than TFE 40%) stone, grinding-strong magnetic separation or strong magnetic-flotation, but the iron concentrate grade is 52 56%, and the iron ** rate is low (50 60%);

For limonite-poor ore, the method of obtaining high-grade iron concentrate or obtaining high rate is magnetization roasting (converting limonite into magnetite (Fe3O4)), grinding-weak magnetic separation or weak magnetic-reverse flotation, the grade of iron concentrate can reach more than 60%, and the rate can reach more than 80%;

Limonite is one of the main iron minerals, which is a natural multi-mineral mixture of brown colors with hydrous iron oxide as the main component. But it is not high in iron and is a minor iron ore.

Limonite is brown in many hues, generally stalactites, grapes, dense or loose lumps or even earthy, and also has a crystal shape like pyrite (called an illusion). In addition to refining iron, limonite can also be used as a pigment. The color of the loess is also mainly due to the presence of them.

Medicinal value. Traditional Chinese medicine"Yu surplus grain"(Other names: surplus grain stone, Bai Yu Yu, Taiyi Yu surplus grain, naphtha) is this mineral.