Method for preparing dust-settling and dust-absorbing material from non-metallic minerals and cement plant production raw materials
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A non-metallic mineral, cement plant technology
Active Publication Date: 2020-09-18
SHANDONG UNIV OF SCI & TECH
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[0002] At present: the cement production workshop will produce a large amount of dust, including raw material dust, dust generated during the production process, and product dust. The dust permeates the production workshop and will enter the respiratory tract with the breathing of production workers, which will adversely affect human health.
In order to reduce the diffusion of dust, the cement production workshop is equipped with a dust treatment device, but the purchase cost of the device is high, and it is difficult to realize large-scale promotion and use; and the ordinary dust removal and dust reduction materials have poor adsorption effect on the dust in the cement workshop, and it is impossible to realize the dust removal in the production workshop. dust down
[0003] Through the above analysis, the problems and defects of the existing technology are: the purchase cost of the dust treatment device is high, and it is difficult to realize the popularization and use; the ordinary dust removal and dust reduction materials have poor adsorption effect on the dust in the cement workshop, and the dust reduction in the production workshop cannot be realized.
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Embodiment 1
[0074] Select limestone blocks with a moderate volume in the cement plant, about 10cm×10cm×20cm in size, and calcinate them to obtain quicklime;
[0075] cooling the calcined quicklime to room temperature, drying and pulverizing to obtain calcium carbonate powder;
[0076] Fully drying and grinding the granite to obtain granite powder;
[0077] Mix calcium carbonate powder and granite powder, stir evenly, and then ball mill to obtain nano powder with a particle size of 10-80nm;
[0078] Add dust-absorbing materials to the nano-powder, add water to mix thoroughly, pour into the mold, and dry;
[0079] After drying, take it out and dry it to obtain a hollow-shaped dust-suppressing and dust-absorbing material.
Embodiment 2
[0081] The detection of adsorption force is carried out on the cavity-shaped dust-falling and dust-absorbing materials prepared in Example 1.
[0082] The main parameters that characterize the porous structure are porosity, average pore size, maximum pore size, pore size distribution, pore shape and specific surface area. In addition to the material, the porous structure parameters of the material have a decisive impact on the mechanical properties and various performances of the material. Since the pores are formed by the accumulation, compaction and sintering of powder particles, the physical and chemical properties of the raw material powder, especially the size, distribution and shape of the powder particles, are the main factors that determine the porous structure and even the final use performance.
[0083] In the embodiment of the present invention, the detection of the adsorption force of hollow dust-falling and dust-absorbing materials includes particle size, porosity,...
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Abstract
The invention belongs to the technical field of material preparation, and discloses a method for preparing a dust-falling and dust-absorbing material from non-metallic minerals and cement plant production raw materials. The method comprises the following steps: calcining limestone blocks to obtain quick lime; cooling quick lime at the room temperature, drying, crushing quick lime to obtain calciumcarbonate powder; drying nonmetallic minerals, grinding nonmetallic minerals to obtain nonmetallic mineral powder; mixing calcium carbonate powder and non-metallic mineral powder, stirring, carryingout ball milling to obtain nano powder; adding a dust collection material, adding water, mixing, pouring the mixture into a mold, drying; and drying in the air to obtain the hollow dust-settling and dust-absorbing material. The raw materials are convenient to obtain, the cost is low, the material preparation cost can be effectively reduced, the dust-settling and dust-absorbing material can be recycled after dust adsorption, and resources are effectively saved. By adding the dust collection material, the adsorption force can be enhanced, higher adsorption capacity is generated for dust particles, and the dust collection effect is better.
Description
technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a method for producing dust-suppressing and dust-absorbing materials from non-metallic minerals and raw materials produced in cement plants. Background technique [0002] At present: Cement production in the cement production workshop will generate a large amount of dust, including raw material dust, dust generated during the production process, and product dust. The dust permeates the production workshop and will enter the respiratory tract with the breathing of production workers, which will have adverse effects on human health. In order to reduce the diffusion of dust, the cement production workshop is equipped with a dust treatment device, but the purchase cost of the device is high, and it is difficult to realize large-scale promotion and use; and the ordinary dust removal and dust reduction materials have poor adsorption effect on the dust in the cem...
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