Application Of Potassium Feldspar


Summary:Potassium feldspar, as an important ore, mainly used in glass, ceramics, but also can be used in papermaking, chemical industry, cosmetics, coatings and other industries.

Material properties

Potassium feldspar is a monoclinic crystalline system that is usually fleshy red, white, or gray. Density 2.54-2.57g/cm3, specific gravity 2.56~2.59g/cm3, hardness 6, the theoretical composition of SiO2 64.7%Al2O3 18.4%, K2O 16.9%. It has the characteristics of low melting point (1150±20 °C), long melting interval time, high melt viscosity, and is widely used in ceramic blanks, ceramic glazes, glass, electric porcelain, abrasive materials and other industrial sectors and potash fertilizers.

Application Prospects

In addition to systonite, there are two homogeneous polymorphic variants: diorite and potassium microclinite. The former is also a monoclinic crystal system, also commonly known as sytomachos; The latter is of the triclinic crystal system. In addition to being used as raw materials for the glass industry (accounting for about 50-60% of the total consumption), feldspar minerals account for 30% in the ceramic industry, and the rest are used in chemicals, glass fluxes, ceramic blank ingredients, ceramic glazes, enamel raw materials, abrasives, glass fibers, welding rods and other industries. Mainly used in glass, ceramics, but also can be used to produce potassium fertilizer, better quality potassium feldspar for the manufacture of television imaging glass shells and so on.

Potassium feldspar, as an important ore, has been used in papermaking, chemical industry, cosmetics, coatings and other industries. But it has a wide range of applications in the glass, ceramics and potash industries. With the vigorous development of ceramic industry, the large consumption of potash feldspar resources makes the potash feldspar reserves continue to reduce, the cost of mining is increasing, and the domestic high quality potash feldspar is in short supply.

Potassium feldspar mines are high in potassium. There are 60 potassium feldspar sources with an average potassium oxide content of about 11.63% and reserves of about 7.914 billion t, which is converted into potassium oxide reserves of about 920 million tons according to the average content. The potassium feldspar in Anhui, Inner Mongolia, Xinjiang, Sichuan, Shanxi and other provinces is relatively concentrated and has abundant reserves, becoming a local non-metallic mineral resource.

Application Of Potassium Feldspar In Ceramic Industry

1. Potassium feldspar is both a solvent raw material and a poor raw material, reducing the firing temperature in the blank can shorten the drying time of the blank body, and reduce the shrinkage and deformation of the blank body during drying. The amount of potassium feldspar in ceramic industry accounts for about 30% of the total amount of potassium feldspar.

2. Potassium feldspar melts into feldspar glass at high temperature, fills the gap between the particles of the billet body, bonds the particles to make the billet body compact, improves the transparency, and helps improve the mechanical strength of the billet body.

3. feldspar glass is a liquid medium at high temperature, which can promote the dissolution and mutual penetration of quartz and kaolin minerals, and promote the formation and development of mullite crystals.

4. Potassium feldspar contains the main oxides in porcelain billet, so as the main raw material, it can replace other industrial raw materials and reduce the production cost.

The Main Role Of Potassium Feldspar In The Fertilizer Industry

Potassium feldspar is directly used as a slow - release fertilizer. The silicon and calcium elements in potassium feldspar and potassium elements were used to produce compound fertilizer. Compound fertilizer was prepared by coupling reaction of potassium feldspar and its nutrient raw materials.

The Main Role Of Potassium Feldspar In Papermaking Filler

Potassium feldspar has beneficial apparent whiteness and particle size and can be used as filler in paper industry.

Recommendation Of Potassium Feldspar Grinding Equipment

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