Water purifier waste residue-based shrinkage-compensating mineral admixture and preparation method thereof

A technology of mineral admixture and shrinkage compensation, which is applied in the field of building materials and can solve problems such as secondary pollution

Active Publication Date: 2020-07-07
浙江合力海科新材料股份有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If not treated specially, it may cause secondary pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A water purifying agent waste slag-based shrinkage-compensating mineral admixture, comprising the following substances in terms of mass percentage:

[0041] Water purifier waste residue: 60%

[0042] Neutralize stimulants: 3%

[0043] Carbide sludge: 8%

[0044] Gangue: 11%

[0045] Slag: 7%

[0046] Waste gypsum: 7%

[0047] Aluminum dross: 4%.

[0048] The water purifying agent waste residue is the waste residue produced in the process of preparing polyaluminum chloride water purifying agent from bauxite, which is dehydrated by pressure filtration at 0.6 MPa for 25 minutes, and the water content is 22%, wherein, SiO 2 10% by weight, Al 2 o 3 The weight ratio is 38%, and the pH value is 5.2.

[0049] The neutralization activator is waste pot mold solution in the aluminum processing industry, wherein the concentration of NaOH is 425g / L. Its role is: on the one hand, it neutralizes the residual acidic substances in the waste residue of the water purifier, and he...

Embodiment 2

[0063] A water purifying agent waste slag-based shrinkage-compensating mineral admixture, comprising the following substances in terms of mass percentage:

[0064] Water purifier waste residue: 70%

[0065] Neutralize stimulants: 2%

[0066] Calcium carbide sludge: 7%

[0067] Gangue: 7%

[0068] Slag: 5%

[0069] Waste gypsum: 6%

[0070] Aluminum dross: 3%.

[0071] The water purifying agent waste residue is the waste residue produced in the process of preparing polyaluminum chloride water purifying agent from coal gangue. It is dehydrated by pressure filtration at 0.5MPa for 28 minutes, and the water content is 20%. Among them, SiO 2 11% by weight, Al 2 o 3 The weight ratio is 37%, and the pH value is 4.8.

[0072] The neutralization activator is waste pot mold solution in the aluminum processing industry, wherein the concentration of NaOH is 400g / L. Its role is: on the one hand, it neutralizes the residual acidic substances in the waste residue of the water purifi...

Embodiment 3

[0086] A water purifying agent waste slag-based shrinkage-compensating mineral admixture, comprising the following substances in terms of mass percentage:

[0087] Water purifier waste residue: 65%

[0088] Neutralize stimulants: 3%

[0089] Carbide sludge: 8%

[0090] Gangue: 8%

[0091] Slag: 6%

[0092] Waste gypsum: 6%

[0093] Aluminum dross: 4%.

[0094] The water purifying agent waste residue is the waste residue produced in the process of preparing polyaluminum chloride water purifying agent from kaolin, and is dehydrated by pressure filtration at 0.7 MPa for 30 minutes. After pressure filtration and dehydration, the water content is 18%, wherein SiO 2 10% by weight, Al 2 o 3 The weight ratio is 39%, and the pH value is 5.4.

[0095] The neutralization activator is waste pot mold solution in the aluminum processing industry, wherein the concentration of NaOH is 450g / L. Its role is: on the one hand, it neutralizes the residual acidic substances in the waste res...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
activation indexaaaaaaaaaa
activation indexaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of building materials, and particularly relates to a water purifier waste residue-based shrinkage-compensating mineral admixture and a preparation method thereof. The preparation method comprises steps of stirring and mixing the water purifier waste residues and a small amount of neutralizing excitant to obtain a neutralized mixture, mixing the neutralized mixture, calcium carbide sludge and coal gangue, calcining the mixture in a calcining furnace to obtain a detoxified active sintered material, and subjecting the detoxified active sintered material, a dry-based neutralization activator, furnace slag, waste gypsum and aluminum slag to vertical milling and ball milling combined grinding so as to obtain the water purifier waste residue-based shrinkage-compensating mineral admixture. Non-toxic, resource and bulk utilization of industrial waste water purifier waste residues is realized, so that the shrinkage compensation characteristic of the admixture is significantly improved, the use value and the market competitiveness are improved, secondary utilization of wastes is realized, and good social benefits and environmental benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a water purifying agent waste slag-based shrinkage-compensating mineral admixture and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and the rapid development of industry, the pollution of water resources has become more and more serious. The water purifier has strong bridging and adsorption properties. During the hydrolysis process, it is accompanied by physical and chemical processes such as coagulation, adsorption and precipitation, and the water purification effect is obvious. It is widely used in the fields of drinking water, industrial water and sewage treatment. [0003] Polyaluminum chloride water purifier is to roast bauxite at a high temperature of about 750°C to decompose aluminosilicate into active γ-Al 2 o 3 , then add hydrochloric acid to generate AlCl 3 , after separation, the polyaluminum...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/06
CPCC04B40/0046C04B18/0472C04B18/0418C04B22/062C04B18/12C04B18/144C04B18/103C04B18/0427
Inventor 丁小富
Owner 浙江合力海科新材料股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap