13 application methods for quartz sand tailings!
The purity of the powder quartz tail sand after ultra-fine is similar to that of the silicon powder product, and the whiteness is improved by nearly 12%. It can be used as fine ceramics, high-quality microporous calcium silicate, insulating materials and rubber, plastics, paints, coatings, etc. Filler. 2. Silicon micropowder For some domestic low-iron quartz sand plant tailings, through the "magnetic separation - scrubbing - de-mudging (drug) - flotation" and other purification processes, it is possible to prepare electrical and electronic grade silicon micro-powder that meets the requirements. 3. Quartz powder Jiang Xuexin and others used quartz sand tailings from a certain place in Fengyang, Anhui Province to prepare quartz powder with -325 mesh greater than 99% and -200 mesh greater than 85% by magnetic separation, hydraulic classification, vibration grinding, etc. The siliceous raw materials of alkali-free glass fiber and glaze frit can of course be used in other fields. 4. Silica brick Silica brick is an acid refractory material widely used in glass melting furnaces, coke ovens or hot blast stoves. Its load softening start temperature is as high as 1640-1670 °C. The requirement for silicon brick raw materials is that the content of SiO2 should not be lower than 96%, and there should not be too many impurities such as Al2O3, N2O, K2O. Some of the waste rock produced during the mining of quartzite or quartz sandstone can meet this requirement. 5. Coating filler Some quartz sand tail muds have a finer particle size and can be used as a coating filler after being purified by fractionation. For example, when used in polyvinyl acetate coatings, its coating products absorb UV light very well. Zhang Xuemei and others added quartz sand tailings and white carbon black to the epoxy floor coating to improve the hardness, wear resistance and scrub resistance of the floor coating. 6. Building ceramsite The use of quartz slag mud, fly ash, terrazzo and other industrial waste slag can produce ceramsite for construction, the ratio of quartz sand tail mud can reach more than 30%. 7. White carbon black Cao Meng et al. used purified quartz tailings and sodium carbonate as raw materials, prepared sodium silicate solution by calcination and leaching, and then prepared white carbon black by sulfuric acid precipitation method, and used the “two-step method†to prepare sulfuric acid by using sodium sulfate as a by-product. Potassium. 8. Silica aerogel Li Jiantao and others used quartz tailings as raw materials to prepare SiO2 aerogels by activation treatment, caustic soda dissolution, sol-gel method and atmospheric pressure gradient drying. 9. Glazed tiles and ceramic glazed materials The magnetite quartzite is selected from the waste quartz iron sand, the quartz content is 58%-62%, and about 15% of the magnet quartzite selected waste slag is introduced into the ceramic billet to improve the physical and mechanical properties of the ceramic body and the glaze layer, and can be effectively used. For the production of thick black glazed wall ceramics. 10. Glass ceramics According to chemical composition analysis, quartz tailings are an ideal raw material for the manufacture of glass-ceramics. The slag glass-ceramic plate is made of natural mineral raw materials such as silica sand, calcite, feldspar and slag, and is added with chemical raw materials such as nucleating agent and coloring agent. After melting, forming, cutting and polishing, it forms a high-grade decorative or industrial sheet. Some at home and abroad are called microcrystalline marble, crystallized glass, siliconite plate or glass ceramic. 11. Cement The chemical composition of quartz tailings meets the requirements of cementing ingredients, and its alkali content is low, which can be used as a substitute for siliceous materials. In terms of physical properties, although the quartz tailings have poor grindability, their fineness is close to that of raw materials. The fineness of the material, after proper grinding, can fully meet the fineness requirements. The only drawback is the dense crystal structure of the quartz tailings, which can cause difficulties in the calcination of clinker. This defect can be overcome by rationally determining the batching plan, giving full play to the easy-burning properties of fly ash and strengthening the operation of the kiln. 12. Sintered bricks and new wall materials Using shale resources, 40%-50% quartz sand tailings and waste mud can be used to produce high-grade modular insulation wall materials. The use of quartz tailings can also develop sand aerated insulation, sound insulation and insulation materials to provide materials for building energy conservation work. In August 2017, Sinoma (Yichang) Energy-saving New Materials Co., Ltd. used the industrial waste of quartz sand tailings to produce new multi-functional energy-saving and environmental protection wall materials project. It was completed and put into operation in Dangyang City, Yichang, Hubei Province, and can consume quartz sand tailings every year. Ten thousand tons. 13. Aerated concrete At present, there are three main types of aerated concrete products in China: one is fly ash type; the other is silica sand type; the third is sand slag type (sand aerated concrete). Sand aerated concrete is mainly divided into tailings and river sand. It is the high-end product of the market, especially the aerated concrete product with quartz sand as the raw material. The above is a small-scale finishing method for quartz sand tailings, I hope it can help everyone! Steccawood Rectangle,Steccawood Curved Joinery,Half Round Steccawood Around,Prefinished Decorative Battens Create PRO CABINET SOLUTION PTY LTD , https://www.pcscabinet.com.au
   1, functional filler
The powder quartz tailings with SiO2 content of 98.0%-99.0% can be used to produce ideal electrical special fillers after grinding, impurity removal and epoxy resin treatment.