The use of potassium feldspar to purify potassium feldspar

With the rapid development of industrial technology, higher and higher requirements have been put forward for mechanical equipment. At present, the use of potassium feldspar powder is very extensive, which brings great help to modern production. However, during the actual production process, many users have responded that the production efficiency is not going up. The normal production capacity is often affected by various factors, which is often very distressing. Then, the following Xiaobian introduced the use of potassium feldspar and purification of potassium feldspar.

The use of potassium feldspar

1, glass flux: feldspar is one of the main components of the glass mixture. Feldspar is high in Al2O3 content, low in iron content and easier to melt than alumina. It not only has a low melting temperature but also has a wide melting range. It is mainly used to increase the alumina content in glass batching, lower the melting temperature in glass production and increase the alkali content. , salary inquiry, to reduce the amount of alkali. In addition, the process of melting the feldspar into glass is relatively slow and the crystal energy is small, which can prevent crystals from being precipitated during glass formation and damage the product. The feldspar can also be used to adjust the viscosity of the glass. In general, a variety of glass mixtures use potassium feldspar or albite.

2. Ingredients for ceramic bodies: Before firing, feldspar can act as a raw material, reduce the drying shrinkage and deformation of the body, improve the drying performance, and shorten the drying time. When firing, it can be used as a flux to lower the firing temperature, promote the melting of quartz and kaolin, and interpenetrate and infiltrate in the liquid phase to accelerate the formation of mullite. The feldspathic vitreous body produced in the melting fills between the mullite grains of the body, densifies the body and reduces voids, thereby improving its mechanical strength and dielectric properties. In addition, the generation of feldspar glass can also improve the light transmittance of the green body. The amount of the feldspar ceramic body blended differs depending on the raw materials and the product requirements.

3, ceramic glaze: ceramic glaze is mainly composed of feldspar, quartz and clay materials, which feldspar content up to 10-35%. In the ceramic industry (blanks and glazes), potassium feldspar is mainly used.

4, enamel raw materials: The main use of feldspar and other mineral raw materials blended into France. The incorporation of feldspar is usually 20-30%.

5. Abrasive: The feldspar is often used as a ceramic cement component when making the grinding wheel, and its content is 28-45%.

Purification of potassium feldspar

The domestic resources of potassium feldspar are abundant, but the iron content is excessive. Therefore, removing iron from potassium feldspar is the key to purification. Iron is a magnetic object, and potassium feldspar is a non-magnetic material that can be easily separated in a magnetic field. K-feldspar raw materials - hand-selection - crushing - grinding - classification - dehydration - finished products, the process is suitable for low iron content, good quality raw materials. Pre crusher is used for coarse crushing and fine crushing. In order to prevent the iron from polluting the potassium feldspar during the processing, it is easy to use a turbine, a grind mill or a porcelain ball mill in the selection of the grinding equipment, super fine laminating, etc. As a grinding equipment, a spiral classifier is used to ensure the granularity of the product. The process is simple and the investment is small. 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 the process and increase the magnetic separation process, it has been proved by practice that the wet high gradient magnetic separator has a good iron removal effect and the iron removal efficiency reaches 70%-90%.

The characteristics of feldspar

The hardness of feldspar fluctuates from 6-6.5, the specific gravity fluctuates from 2-2.5, is brittle, has high compressive strength, and has strong chemical stability to acid. The color of K-feldspar is mostly red, gray and white. The albite is white, gray and light yellow, and the calcium feldspar is white or light gray.

Feldspar is an aluminosilicate mineral containing calcium, sodium, and potassium. It has many kinds, such as albite, anorthite, feldspar, anthracite, microcline, orthoclase, Peridotite and so on. They all have glass sheen, a variety of colors, and are colorless, with white, yellow, pink, green, gray, black, and so on. Some are transparent and some are translucent. The feldspar itself should be colorless and transparent. It is colored or not completely transparent because it contains other impurities. Some are blocky, some are plate-shaped, some are columnar or needle-shaped, and so on.

Editor's summary: The use of potash feldspar and the purification of potassium feldspar are introduced here, and we hope to help everyone. If you want to know more related information, you can pay attention to this website information.

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