Potassium feldspar is a potassium rich silicate mineral. He has the advantages of low melting point, long melting interval time, high melting viscosity, and low fluidity. Widely used in industrial sectors such as ceramic blanks and welding electrodes.

Potassium feldspar powder is mainly used in the manufacturing of ceramics and enamel, glass raw materials, abrasive tools and other industrial industries. Feldspar is one of the main production materials in the glass and ceramic industries. As a flux substance in the glaze and body of ceramics, it can reduce the firing temperature of ceramic products and is the main source of glass phase substances in the glaze layer. At the same time, feldspar is also the main raw material for glass, enamelware, artificial grinding stones, welding rods, and so on.

       In addition to being used as an industrial raw material (accounting for about 50-60% of the total usage), feldspar powder accounts for 30% of the usage in the ceramic industry, while the rest is used in other industries such as chemical, abrasive and grinding tools, glass fiber, and welding electrodes. After being ground by a powder mill, feldspar can be used in many ways.

 (1) Glass flux: Feldspar is one of the main components of glass mixtures. Feldspar has a high content of Al2O3, low iron content, and is more easily melted than alumina. It not only increases the melting temperature and alkali content, but also reduces the amount of alkali used. In addition, the process of feldspar melting into glass is relatively slow and has low crystallization ability, which can prevent the precipitation of crystals during the glass formation process and damage to the product. Feldspar can also be used to adjust the viscosity of glass. Generally, potassium feldspar or sodium feldspar is used for various glass mixtures.

(2) Ceramic body ingredients: Before firing, feldspar can act as a barren raw material, reducing the drying shrinkage and deformation of the body, improving drying performance, and shortening drying time. During firing, it can be used as a flux to lower the firing temperature, promote the melting of quartz and kaolin, and accelerate the formation of mullite through mutual diffusion and permeation in the liquid phase. The feldspar glass body generated during melting is filled between the mullite grains of the body, making the body dense and reducing voids, thereby improving its mechanical strength and dielectric properties. In addition, the formation of feldspar glass can also improve the transparency of the body. The amount of feldspar added to ceramic bodies varies with different raw materials and product requirements.

(3) Ceramic glaze: Ceramic glaze is mainly composed of feldspar, quartz, and clay raw materials, with feldspar content reaching 10-35%. In the ceramic industry (raw materials and glazes), potassium feldspar is mainly used.

(4) Enamel raw materials: mainly mixed with feldspar and other mineral raw materials to form enamel. The amount of feldspar added is usually 20-30%.

(5) Other: Potassium feldspar can be used as a raw material for extracting potassium fertilizer.