Silicon dioxide is an important component of glass, quartz glass, water glass, optical fiber, electronic industry, optical instruments, handicrafts and refractory materials raw materials, is an important material for scientific research.
When silica crystallizes perfectly it is crystal;Silica gel oxidation after dehydration is agate;When the aqueous colloids of silica solidify, they become opals;When silica grains are smaller than a few microns, it forms chalcedony, flint, and secondary quartzite.It is a mineral resource with very stable physical and chemical properties. The crystal belongs to the oxide mineral of the trigonal crystal system, namely the low temperature quartz (-quartz), which is the most widely distributed mineral species in the quartz family.Quartz in a broad sense also includes high-temperature quartz (-quartz).Quartz block also known as silica, mainly for the production of quartz sand (also known as silica sand) raw materials, is also quartz refractories and fired silicon iron raw materials.
In addition, silica can also be used as a lubricant, is an excellent flow promoter, mainly as a lubricant, anti-adhesive, flow aid.It is especially suitable for granulation of oil and extract drugs. The granule made has good fluidity and compressibility.It can also be used as a flow aid in direct pressing.As a disintegrating agent, it can greatly improve the fluidity of particles, increase the density of particles, increase the hardness of prepared tablets, shorten the time of disintegrating, and increase the dissolution rate of drugs.In the manufacture of granule, it can be used as internal desiccant to enhance the stability of medicine.It can also be used as filter aid, clarifier, defoaming agent and suspension aid of liquid preparation, thickening agent.