Method for preparing building material admixture by use of bamboo pulp papermaking causticization white mud

A technology for causticizing white mud and building materials, applied in cement production, sustainable waste treatment, solid waste management, etc., can solve the problems of high energy consumption, low utilization, threats to the surrounding ecological environment, etc., and achieve the effect of improving activity

Inactive Publication Date: 2015-06-10
绵阳西南科大瑞方科技有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, although the utilization of bamboo pulp and paper causticizing lime mud and fluidized bed sulfur-fixed ash has been researched, most of them consume huge energy and the utilization is very low, so that the accumulation of the two is still increasing year by year. It is imminent how to find out a method that can use both of them in large quantities. The accumulation of the two wastes is not only a huge threat to the surrounding ecological environment, but also a considerable loss in terms of economic benefits.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing building material admixture by use of bamboo pulp papermaking causticization white mud
  • Method for preparing building material admixture by use of bamboo pulp papermaking causticization white mud
  • Method for preparing building material admixture by use of bamboo pulp papermaking causticization white mud

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing building material admixture with bamboo pulp papermaking causticizing white mud, the steps are:

[0033] a. Ingredients: Bamboo pulp papermaking causticizing lime mud (papermaking by-product of paper mill, the same below) 43%, fluidized bed sulfur-fixed ash (discharged from thermal power plant ash discharge) 57% raw material composition and mass percentage example The raw materials are bamboo pulp papermaking causticizing lime mud and fluidized bed sulfur fixation ash;

[0034] The bamboo pulp papermaking causticizing lime mud is a wet-based bamboo pulp papermaking causticizing lime mud in which the mass percentage of water is 45%; the fluidized bed sulfur-fixing ash is a hot fluidized bed with a temperature of 200 ° C. Sulfur-fixed ash;

[0035] b. Mixed evaporation: put bamboo pulp and papermaking causticizing white mud into a high-speed mixer, and then put it into the fluidized bed sulfur-fixing ash under stirring and stir rapidly for 15 minut...

Embodiment 2

[0038] A method for preparing building material admixture with bamboo pulp papermaking causticizing white mud, the steps are:

[0039] A, batching: get raw material bamboo pulp and papermaking causticizing white mud and fluidized bed sulfur-fixing ash according to the raw material composition and mass percentage example of 58% of bamboo pulp and papermaking causticizing white mud and fluidized bed sulfur-fixing ash;

[0040] The bamboo pulp papermaking causticizing lime mud is a wet-based bamboo pulp papermaking causticizing lime mud in which the mass percentage of water is 45%; the fluidized bed sulfur-fixing ash is a hot fluidized bed with a temperature of 200 ° C. Sulfur-fixed ash;

[0041] b. Mixed evaporation: Put bamboo pulp and papermaking causticizing white mud into a high-speed mixer, and then put it into the fluidized bed sulfur-fixing ash under stirring and stir rapidly for 15 minutes (about 26% of the bamboo pulp and papermaking causticizing white mud can be evapor...

Embodiment 3

[0044] A method for preparing building material admixture with bamboo pulp papermaking causticizing white mud, the steps are:

[0045] A, batching: get raw material bamboo pulp papermaking causticizing white mud and fluidized bed sulfur-fixing ash according to the raw material composition and mass percentage example of 72% of bamboo pulp and papermaking causticizing white mud and fluidized bed sulfur-fixing ash;

[0046] The bamboo pulp papermaking causticizing lime mud is a wet-based bamboo pulp papermaking causticizing lime mud in which the mass percentage of water is 45%; the fluidized bed sulfur-fixing ash is a hot fluidized bed with a temperature of 200 ° C. Sulfur-fixed ash;

[0047] b. Mixed evaporation: Put bamboo pulp and papermaking causticizing white mud into a high-speed mixer, and then put it into the fluidized bed sulfur-fixing ash under stirring and stir rapidly for 15 minutes (about 22% of bamboo pulp and papermaking causticizing white mud can be evaporated mo...

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

No PUM Login to View More

Abstract

The invention discloses a method for preparing a building material admixture by use of bamboo pulp papermaking causticization white mud, which is characterized by comprising the following steps of: fetching 10-90% of wet-basis bamboo pulp papermaking causticization white mud containing 10-85% of water by mass and 90-10% of thermal-state fluidized bed sulfur fixation ash at 80-900 DEG C by mass; adding the bamboo pulp papermaking causticization white mud into a high-speed stirring machine; stirring and adding the fluidized bed sulfur fixation ash, and quickly stirring for 5-20 minutes; and putting the mixture in a dry storage yard, spreading and standing to naturally evaporate the mixture for at least 7 days to obtain the building material admixture. According to the method disclosed by the invention, partial moisture in the wet white mud is evaporated by use of the heat of hot ash, the remaining moisture and alkali in the white mud generate an alkali activation reaction with the components such as sial and the like in the ash, and the building material admixture with good performance is prepared so as to turn waste into wealth, reduce environmental pollution and bring good benefits.

Description

technical field [0001] The invention belongs to waste treatment, and relates to a method for preparing building material admixture by using bamboo pulp papermaking causticizing white mud. The building material admixture prepared by the invention can be used as an admixture to prepare ready-mixed concrete and plastering mortar, and can also be used to prepare building materials such as cement products, concrete blocks and bricks. Background technique [0002] Bamboo pulp and paper causticizing white mud is a by-product treated by alkali recovery technology in the process of bamboo pulping and papermaking. It is a sediment produced in the causticization reaction process of alkali recovery. 3 , because of its residual alkali and strong corrosiveness, it is a secondary pollutant, and its discharge will cause environmental pollution. Especially when the white mud is discharged, the water content is generally above 40%, and such a high water content is difficult. It is directly r...

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 & AuthorityPatents(China)
IPC IPC(8): C04B18/30C04B7/28
CPCY02P40/10Y02W30/91
Inventor严云王钧张凯义毛麟张旭
Owner绵阳西南科大瑞方科技有限公司