Method utilizing calcium carbide slag as raw material to produce gypsum crystal whisker
A technology of gypsum whiskers and carbide slag, which is applied in the field of comprehensive utilization of solid waste, can solve the problems of complex reaction steps, high production cost, and long production cycle, and achieve the effect of cheap raw materials, low cost, and large operating flexibility
Inactive Publication Date: 2014-03-26
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Abstract
The invention relates to a method utilizing calcium carbide slag as a raw material to produce a gypsum crystal whisker, and belongs to the field of inorganic material preparation and solid waste comprehensive utilization. The method utilizing calcium carbide slag as the raw material to produce the gypsum crystal whisker is characterized by comprising the following steps: (1) drying, ball milling and calcining the calcium carbide slag; (2) enabling the obtained calcium carbide slag to react with dilute sulfuric acid after the calcining treatment step, and washing and centrifuging the precipitation product; (3) mixing the solid obtained in the step (2) with water to prepare size, adding a crystal aid with a certain mass fraction in the size, transferring the mixed solution in a hydrothermal reaction kettle to carry out hydrothermal reaction, and washing, centrifuging and drying the product after the hydrothermal reaction to obtain the gypsum crystal whisker product prepared by taking the calcium carbide as the raw material. The method is mild in reaction conditions, simple in process, flexible in operation, and easy for industrial production. The prepared gypsum crystal whisker is large in draw ratio and good in reinforcing performance.
Application Domain
Polycrystalline material growthFrom normal temperature solutions +1
Technology Topic
Drawing ratioGypsum +8
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PUM
Property | Measurement | Unit |
Length | 3.0 ~ 150.0 | µm |
Length | 120.0 | µm |
Length | 500.0 | µm |
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