A kind of preparation method of hollow glass microsphere with high floating rate
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A hollow glass microbead and flotation rate technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of narrow application range, great environmental damage, single hollow glass microbead product, etc., to achieve fluidity Good, wide selectivity, particle size distribution and controllable effect
Active Publication Date: 2021-05-25
SINOSTEEL MAANSHAN INST OF MINING RES CO LTD +1
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However, the preparation method uses SO 3 As a foaming agent, it is harmful to the environment and has safety risks, and the hollow glass microspheres prepared by this method are single, and the crushing strength of the hollow microspheres is 16-23MPa, and the application range is narrow
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[0026] In order to further describe the present invention, the preparation method of a hollow glass microsphere with high floating rate of the present invention will be further described in conjunction with the following examples. However, the present invention is not limited to the Examples.
[0027] A kind of preparation method of the hollow glass microsphere of high floating rate of the present invention concrete implementation process is as follows:
[0028] (1) Accurately weigh raw materials, surfactants and stable dispersants, and use a flow meter to measure a certain quality of water, mix it through a dispersion tank for 15 to 20 minutes, and then transport it to a ball mill through a feeding pump to obtain a solid phase content of 55%. ~65% slurry.
[0029] (2) The slurry is transported to the spray granulation equipment through the feeding pump, and the spray granulation is carried out under the conditions of the inlet temperature of 280-420°C, the outlet temperature...
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Abstract
The invention discloses a method for preparing hollow glass microspheres with a high floating rate. The production process and steps are as follows: 1) preparation of slurry: accurately weigh each component of basic raw materials, stable dispersant and surfactant; basically The components of raw materials are quartz, borax, calcium carbonate, sodium carbonate, sodium sulfate, sodium phosphate; 2) preparation of precursor; 3) preparation of hollow glass microspheres; 4) surface modification. The stable dispersion slurry prepared by the method of the present invention has high solid phase content and low surface tension and viscosity, which not only significantly reduces the energy consumption of spray granulation, but also prepares a precursor with a small particle size span and uniform composition, combined with a high-temperature negative pressure vitrification process The floating rate of the hollow glass microspheres is higher than 96.5% and the surface finish is high, and the hollow glass microspheres are strengthened by low-temperature circulating air. The invention has easy-to-obtain raw materials, high hollow glass microsphere forming rate, simple process, low energy consumption, low production cost and wide product application range.
Description
technical field [0001] The invention relates to an inorganic filler, in particular to a hollow glass microsphere, which can be widely used in the fields of petroleum, chemical industry, military industry, shipbuilding, automobile, aerospace, building materials, etc. Unsaturated resins, nitrile, phenolic, acrylic and other coatings, as well as inks, adhesives, sealants, emulsion explosives and other products. Background technique [0002] Hollow glass microspheres are hollow micron-sized spherical particles, which have excellent characteristics such as low density, high strength, low thermal conductivity, sound insulation, high melting point, strong stability, and good fluidity. It makes it an excellent modified material and endows the substrate with multiple functions, so it is widely used in petroleum, military industry, building materials, automobiles, plastics, paints, explosives and other industries. [0003] At present, the preparation technologies of hollow glass micr...
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Patent Type & Authority Patents(China)
IPC IPC(8): C03C11/00
CPCC03C11/002C03B19/107C03C1/006C03C3/097
Inventor 许传华刘亚辉汪俊汪光辉柳雷彭丽芬
Owner SINOSTEEL MAANSHAN INST OF MINING RES CO LTD
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