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What are the uses of potassium feldspar? What equipment is required to process potassium feldspar?

Source:nclirik Posted:2022-05-07
Potassium feldspar is a potassium-rich silicate mineral with the advantages of low melting point, long melting interval and high melt viscosity. It is one of the main production raw materials in the glass and ceramic industries. The main raw material of potash fertilizer can be widely used in industrial fields such as processing and extracting potash fertilizer, and it is an important energy-saving alkali-substituting mineral raw material.
Potassium feldspar
Potassium Feldspar

Potassium feldspar ore is ground by a pulverizer to obtain potassium feldspar powder of 80 mesh to 2500 mesh, which can be used in many industries after modification.

The use of potassium feldspar powder

The use of potash feldspar is mainly used to produce potash fertilizer after being pulverized by a pulverizer. Potassium feldspar to produce potash fertilizer. Potash fertilizer is an important fertilizer for crop growth, and the uses of potassium feldspar are as follows.

Potassium feldspar powder
Potassium Feldspar Powder

1. Potassium feldspar purification

Domestic potassium feldspar resources are abundant, but the iron content exceeds the standard. Therefore, potassium feldspar iron removal is the key to purification. Iron is a magnetic substance, while potassium feldspar is a non-magnetic substance, and the two are easily separated in a magnetic field.

Potassium feldspar raw material - hand selection - crushing - grinding - classification - dehydration - finished product, this process is suitable for raw materials with low iron content and good quality. Pre-crusher is used for coarse crushing and fine crushing. In order to prevent the contamination of potassium feldspar by iron during processing, it is easy to use turbines, gravel mills or porcelain ball mills, ultra-fine laminated autogenous mills, etc. when selecting grinding equipment. As a grinding equipment, a spiral classifier is used to ensure the particle size of the product. The process is simple and the investment is low. The disadvantage of this process is that the content of iron in the product is difficult to meet the requirements of high-quality ceramic products. In order to overcome the shortcomings of this process and increase the magnetic separation process, it has been proved that the selection of wet high gradient magnetic separator has a good iron removal effect, and the iron removal efficiency reaches 70%-90%.

2. Potassium feldspar fireproof calcium silicate board

The principle of using potassium feldspar to make calcium silicate board is to make the raw material into slurry, mix it evenly in proportion (potassium feldspar powder: lime: fiber = 229:91:80), and use flow slurry to make the prepared slurry. The slabs are made by the process, and the slabs are stacked and sent to the autoclave, and the high-temperature and high-pressure steam is cured, so that the silicon-alumina in the material and the calcium oxide in the lime can generate calcium silicate hydrate under the action of high-temperature hydrothermal reaction, and the hydrated calcium silicate is hydrated. Calcium silicate crystalline mineral, cemented with fibers to form a whole.

3. Use potassium feldspar to prepare potassium fertilizer and at the same time prepare silica

The potassium content in the potassium feldspar is 13.6%. According to the characteristics of the remaining mineral stone after potassium extraction, comprehensive utilization research is carried out: the principle of preparing silica is based on the fact that the potassium feldspar structure has been destroyed after potassium extraction, and then , react with NaOH at a certain temperature to prepare water glass, add an appropriate amount of electrolyte while diluting with water, neutralize with acid and age at constant temperature, and then filter and wash to obtain white carbon black.

4. Other uses

(1) Ceramic body ingredients:

Feldspar can act as a barren raw material before firing, reduce drying shrinkage and deformation of the green body, improve drying performance, and shorten drying time. During sintering, it can be used as a flux to reduce the sintering temperature, promote the melting of quartz and kaolin, and infiltrate each other in the liquid phase to accelerate the formation of mullite. The feldspar glass body generated in the melting is filled between the mullite grains of the green body, so that the green body is dense and the voids are reduced, thereby improving its mechanical strength and dielectric properties. In addition, the formation of feldspar glass can also improve the light transmittance of the green body. The amount of feldspar added to the ceramic body varies with different raw materials and different product requirements.

(2) Glass flux:

Feldspar is one of the main components of glass mixture. Feldspar contains high Al2O3, low iron content, and is more fusible than alumina. It not only has a low melting temperature but also a wide melting range. It is mainly used to increase the alumina content in glass ingredients, reduce the melting temperature in glass production and increase the alkali content. , in order to reduce the amount of alkali. In addition, the process of feldspar melting into glass is relatively slow, and its crystallization ability is small, which can prevent crystals from being precipitated during the glass formation process and damage the product. Feldspar can also be used to adjust the viscosity of glass. Generally, potassium feldspar or albite is used for various glass mixtures.

(3) Ceramic glaze:

Ceramic glaze is mainly composed of feldspar, quartz and clay raw materials, of which the feldspar content can reach 10-35%. Potassium feldspar is mainly used in the ceramic industry (blanks and glazes).

(4) Enamel raw materials:

Mainly use feldspar and other mineral raw materials to blend into flan. The incorporation of feldspar is usually 20-30%.

To understand the uses of potassium feldspar powder, we also need to learn more about potassium feldspar.

What equipment is required to process potassium feldspar?

The potash feldspar beneficiation process is inseparable from the milling process, so what equipment is needed for the potash feldspar milling production line? As an equipment supplier of potassium feldspar grinding powder production line, we will introduce it to you in detail.

Potassium feldspar processing equipment Raymond mill
Potassium feldspar processing equipment-Raymond mill

What equipment is needed for the production line of potassium feldspar grinding powder? The technical scheme and process route of the potassium feldspar grinding powder production line are as follows: the potassium feldspar is washed with water and then put into the jaw crusher for crushing, the crushed material is put into the roller crusher for secondary crushing, and the secondary crushed particles are put into The silo is evenly put into the grinding mill by the silo electromagnetic vibrating feeder to be ground into fine powder.

The subsequent potassium feldspar beneficiation process is as follows:

A. Magnetic separation: put the fine powder materials ground by the pulverizer into the magnetic separation machine to magnetically separate iron, mica and other substances;
B. Screening: put the magnetically separated materials into the high-frequency vibrating screen for screening, the screened fine materials are directly fed into the high-gradient magnetic separation equipment, the coarse materials are directly returned to the silo, and the waste materials are directly discharged;
C Selection: The fine materials screened by the high-frequency vibrating screen are put into the high-gradient magnetic separation equipment for secondary selection, and iron, mica and other substances are selected;
D. Concentration: put the selected material into the concentrator to concentrate, so that the potassium stone powder material can obtain a balanced potassium content; E. Compression: the concentrated potassium stone powder material is put into the vacuum compressor for compression, so that the water content of the potassium stone powder material is compressed. less than 10%;
F. Finished product: the finished product with the iron content of the compressed potash powder material less than 0.08%.

It can be known from the above technical scheme and process route that the main equipment of the potassium feldspar grinding powder production line is the pulverizer. CLIRIK is a well-received manufacturer of mills in the potassium feldspar deep processing industry. The Raymond mills, vertical mills, ultra-fine mills, ring roller mills and other equipment we produce have been used in the potassium feldspar grinding powder production line. Wide range of applications and good reputation.

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