Modified carbon fiber magnesite board prepared with industrial waste acid and preparation process thereof

A technology for industrial waste acid and preparation process, applied in the field of building materials, can solve the problems of complex preparation process, high dry shrinkage rate and wet expansion rate, increased production cost, etc., and achieves the effects of low cost, low water absorption rate, and cost reduction.

Inactive Publication Date: 2018-06-29
山东昇昀国际贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its preparation process is complicated, and the production cost is greatly increased while improving the flexural strength and impact strength of magnesite materials, and the dry shrinkage rate and wet expansion rate are high.

Method used

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  • Modified carbon fiber magnesite board prepared with industrial waste acid and preparation process thereof
  • Modified carbon fiber magnesite board prepared with industrial waste acid and preparation process thereof
  • Modified carbon fiber magnesite board prepared with industrial waste acid and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Depend on figure 2 As shown, a mixer, the mixer is a box structure, the mixer is provided with a mixer shell 4 and a mixing chamber 5, the mixer shell 4 and the mixing chamber 5 are box structures, and the mixing chamber 5 is located in the mixer shell 4 Inside; the inner wall of the mixer shell 4 and the outer wall of the mixing chamber 5 enclose a cooling water cavity 6, the cooling water cavity 6 and the mixing chamber 5 are not connected to each other; the side wall of the mixer shell 4 is provided with a water inlet 7 and a water outlet 8 , The water inlet 7 is lower than the water outlet 8; the top of the mixer housing 4 is provided with a feed inlet 9 communicating with the mixing chamber 5, and the bottom of the mixer housing 4 is provided with a material outlet 10 communicating with the mixing chamber 5.

[0030] When in use, the cooling water is introduced from the water inlet 7 and discharged from the water outlet 8, and the temperature of the reactants in t...

Embodiment 2

[0033] a) by parts by weight, take by weighing 0.6 parts of surface oxidation-treated carbon fibers, 40 parts of sawdust, 160 parts of magnesium oxide powder, and 580 parts of industrial waste sulfuric acid with a concentration of 8%;

[0034] b) by figure 2 Shown, carry out in the mixing machine of embodiment 1, pass into cooling water from water inlet 7, cooling water flows out from water outlet 8, stirring tool is a stirring cage, injects in mixing chamber 5 from feed inlet 9 while stirring Step a) weighed 580 parts of industrial waste sulfuric acid with a concentration of 8%; 0.6 parts of surface oxidation-treated carbon fibers weighed in step a) and 160 parts of magnesium oxide powder weighed, mixed and stirred for 1 hour, Slowly add the above industrial waste sulfuric acid, keep stirring, control the size of the cooling water flow, when the reaction temperature is 50°C

Embodiment 3

[0042] a) by parts by weight, take by weighing 2.0 parts of surface oxidation-treated carbon fibers, 50 parts of sawdust, 180 parts of magnesium oxide powder, and 700 parts of industrial waste hydrochloric acid with a concentration of 16%;

[0043] b) by figure 2Shown, carry out in the mixing machine of embodiment 1, pass into cooling water from water inlet 7, cooling water flows out from water outlet 8, stirring tool is a stirring cage, injects in mixing chamber 5 from feed inlet 9 while stirring Step a) weighed 700 parts of 16% industrial waste hydrochloric acid; mixed and stirred 2.0 parts of surface oxidation-treated carbon fiber and 180 parts of magnesium oxide powder weighed in step a), and the mixing time was 1.5 hours , slowly add to the above industrial waste hydrochloric acid, keep stirring, control the size of the cooling water flow, when the reaction temperature is 50°C

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PUM

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Abstract

The invention relates to a modified carbon fiber magnesite board prepared with industrial waste acid and a preparation process thereof and solves the technical problems that a process in the prior arthas complex steps, has to greatly increase production cost for improving breaking strength and anti-impact strength of magnesite material, and is high in dry shrinkage rate and wet swelling rate. Themodified carbon fiber magnesite board is composed of three layers, which are tightly successively arranged from the top to the bottom: a first glass fiber net, a carbon fiber magnesite board inner layer and a second glass fiber net. The carbon fiber magnesite board inner layer is prepared from, by weight, 0.6-2.0 parts of carbon fibers after surface oxidizing treatment, 40-50 parts of sawdust, 160-180 parts of magnesite powder, and 580-700 parts of the industrial waste acid being 8-16% in concentration. The invention also provides a preparation method of the modified carbon fiber magnesite board. The modified carbon fiber magnesite board is extensively applied to the field of building materials.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a modified carbon fiber magnesite board prepared by utilizing industrial waste acid and a preparation process thereof. Background technique [0002] Heavy industry is the main source of hazardous waste in my country, and the output of waste acid ranks among the top three in the amount of industrial hazardous waste, accounting for 21%, and is dominated by inorganic acids such as hydrochloric acid, sulfuric acid, and nitric acid. According to the research of China Chemical Industry Information Center, my country produces more than 100 million tons of waste sulfuric acid every year. Sulfuric acid is widely used in chemical industry, iron and steel and other industries. If sulfuric acid and other industrial waste water after production are discharged into the environment without treatment, it will not only acidify the water body or soil, cause harm to the ecological environment, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B5/02B32B17/02B32B33/00B32B37/00B32B38/16C04B28/10C04B22/00
Inventor 李正坤李文涛
Owner 山东昇昀国际贸易有限公司
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