Method for preparing high purity quartz sand: Big size women briefs with different lace trim decoration. Suitable for fat people who seek charming life. Have red, white, black etc color for choose. Big Size Women'S Briefs,Mature Women Sexy Panties,High Waist Panties,Mature Women Panties Taihe Aosili Clothing Co., Ltd. , https://www.aosili-fs.com
1. Rough selection: remove obvious impurities and foreign matter from various quartz ore;
2, crushing: using a professional crusher to crush the quartz ore to particles with a particle size of 1-20mm;
3. Water crushing: The quartz particles after being burned are rapidly cooled in cold water to achieve the purpose of removing bubbles, water marks and some encapsulated impurities inside the mineral, so that the minerals are cracked;
4. Crushing: The raw material is made into ultra-fine quartz sand with a particle size of 5 to 50 buckets m by wet or dry grinding;
5, high magnetic magnetic separation: the magnetic field strength of 50. 15000 Gauss high magnetic magnetic separation beneficiation equipment, the raw materials themselves and the iron and other elements introduced during the operation and these elements of weak magnetic properties;
6. Grading: The grading equipment is used to divide the raw materials into products of various particle size ranges according to the standard. In the subsequent processing, the raw materials are separately processed according to the particle size range;
7. Roasting: The professional roasting furnace is used to make the quartz ore particles at 300. C ~ 1500. Roasting for 2 to 5 hours under conditions of C. Crushing: After the burnt, the envy of the glutinous glutinous fungus is succinctly succinct. Such as heat 0.5-2I], 'time, to increase the solubility of this part of soluble substances in water;
9. Flotation: adding flotation agent to the quartz sand fine powder after water pulverization, and removing impurities having a specific gravity of less than 1;
10. Deionized water washing: Washing off residual flotation agent and impurities on the surface of quartz sand with deionized water;
11. Drying: first remove the large amount of water by air drying (drying) after deionized water washing, then drying in special drying equipment, and heating to I000C ~ 2000C;
12. Acid leaching: adding the dried quartz sand to the dipping tank, and rapidly adding the acid (sulfuric acid, hydrochloric acid, nitric acid or hydrofluoric acid) used for acid leaching under the condition of dry high temperature, the acid concentration is 5% to 20%. At 30'12.100. When the temperature is stirred for 2 to 24 dx under the condition of C, trace metals and non-metallic impurities in the quartz sand fine powder are removed;
13. Deionized water washing: the acid leached material is washed with deionized water to remove the acid solution contained in the raw material until neutral;
14. Drying and packaging: The raw materials are dried by special drying equipment, and vacuum-packed in the purification workshop to obtain the products.
February 12, 2020