硅石1-3
原产地：河北 | 二氧化硅含量：99（％） | 熔点：1750（℃） |
莫氏硬度：7 | 密度：1.5（g/cm3） | |
硅砂,又名二氧化硅,或石英砂.硅砂是以石英为主要矿物成分、粒径在 0.020mm-3.350mm 的耐火颗粒物，根据开采和加工方法的不同分为人工硅砂及水洗砂、擦洗砂、精选（浮选）砂等天然硅砂。硅砂是一种坚硬、耐磨、化学性能稳定的硅酸盐矿物，其主要矿物成分是SiO2 ，硅砂的颜色为乳白色或无色半透明状，硬度7，性脆无解理，贝壳状断口，油脂光泽，相对密度为2.65，其化学、热学和机械性能具有明显的异向性，不溶于酸，微溶于KOH溶液，熔点1750℃。颜色呈乳白色、淡黄、褐色及灰色，硅有较高的耐火性能。
The English version
Silica 1-3
Country of origin: hebei
Silica content: 99 (%)
Melting point: 1750 ℃)
Mohs hardness: 7
Density: 1.5 (g/cm3)
Silica sand, also known as silica or quartz sand. Silica sand is the quartz as the main mineral composition, particle size in the refractory particles of 0.020 mm to 0.020 mm, according to different pided into mining and processing methods of artificial silica sand and sand washing, sand washing, selection of natural silica sand (flotation) sand, etc. Silica sand is a hard, wear resistant, stable chemical properties of silicate minerals, the main mineral composition is SiO2, the color of the silica sand for the milky white or colorless translucent, 7 hardness, brittle no cleavage, conchoidal fracture, oily luster, relative density at 2.65, its chemical, thermal and mechanical properties has obvious anisotropy, insoluble in acid, slightly soluble in KOH solution, melting point 1750 ℃. Color white, yellow, brown and gray, silicon has high fireproof performance.
