Unlock instant, AI-driven research and patent intelligence for your innovation.

A composite cement using calcium carbide slag and fly ash as admixture materials

A technology of composite cement and carbide slag, applied in the field of composite cement, can solve the problems of insufficient strength and weather resistance, high fuel consumption and heat consumption, increased production costs, etc., and achieve good economic benefits and promotion value , prolong life, and protect the natural environment

Active Publication Date: 2021-11-02
南宁红狮水泥有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some people have carried out research on the use of calcium carbide slag as raw material and high-temperature calcination to prepare cement, but the production process is complicated, the fuel consumption and heat consumption are high, and the exhaust gas emission is large, which increases the production cost.
[0005] Fly ash refers to the material that is discharged from the flue and collected by the dust collector after the pulverized coal is burned in the boiler in the coal-fired power plant. It is one of the by-products of coal combustion with the largest emission in my country at present. 7000cm 2 / g, the main component is SiO 2 , Al 2 o 3 and Fe 2 o 3 , it is a typical pozzolanic material with potential activity. Fly ash is used as cement and concrete admixture in the production of cement, sintered bricks and other new building materials, as well as in the fields of civil engineering, water conservancy and marine engineering. The main way to utilize external fly ash. Currently, there are few reports on the use of calcium carbide slag and fly ash as admixture materials to prepare composite cement.
In addition, even if the above-mentioned raw materials are added to some cements, there are generally shortcomings in performance, such as strength and weather resistance, which cannot meet the requirements of use, and need to be continuously improved.

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
  • A composite cement using calcium carbide slag and fly ash as admixture materials
  • A composite cement using calcium carbide slag and fly ash as admixture materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A composite cement using calcium carbide slag and fly ash as admixtures consists of the following materials in parts by weight:

[0028] 6 parts of modified carbide slag, 8 parts of fly ash, 12 parts of slag, 65 parts of Portland cement clinker, and 3 parts of gypsum.

[0029] The preparation method of described modified carbide slag comprises the steps:

[0030] (1) First put the calcium carbide slag into the vacuum drying oven for drying treatment, and take it out for later use after 1 hour; during the drying treatment, control the air pressure in the vacuum drying oven to 1~10Pa and the temperature to 80°C;

[0031] (2) Uniformly atomize and spray the titanate coupling agent aqueous solution on the calcium carbide slag treated in step (1), and take out the carbide slag for later use; the titanate coupling agent in the titanate coupling agent aqueous solution is The massfraction of agent is 10%; The atomized spray coating amount of described titanate coupling agent a...

Embodiment 2

[0037] A composite cement using calcium carbide slag and fly ash as admixtures consists of the following materials in parts by weight:

[0038] 6 parts of modified carbide slag, 12 parts of fly ash, 12 parts of slag, 65 parts of Portland cement clinker, and 6 parts of gypsum.

[0039] The preparation method of described modified carbide slag comprises the steps:

[0040] (1) First put the calcium carbide slag into the vacuum drying oven for drying treatment, and take it out for later use after 1 hour; during the drying treatment, control the air pressure in the vacuum drying oven to 1-10Pa and the temperature to 85°C;

[0041] (2) Uniformly atomize and spray the titanate coupling agent aqueous solution on the calcium carbide slag treated in step (1), and take out the carbide slag for later use; the titanate coupling agent in the titanate coupling agent aqueous solution is The mass fraction of agent is 15%; The atomized spray coating amount of described titanate coupling agent...

Embodiment 3

[0047] A composite cement using calcium carbide slag and fly ash as admixtures consists of the following materials in parts by weight:

[0048] 8 parts of modified carbide slag, 10 parts of fly ash, 14 parts of slag, 68 parts of Portland cement clinker, and 5 parts of gypsum.

[0049] The preparation method of described modified carbide slag comprises the steps:

[0050] (1) First put the calcium carbide slag into the vacuum drying oven for drying treatment, and take it out after 1.5 hours for later use; during the drying treatment, control the air pressure in the vacuum drying oven to 1~10Pa and the temperature to 83°C;

[0051] (2) Uniformly atomize and spray the titanate coupling agent aqueous solution on the calcium carbide slag treated in step (1), and take out the carbide slag for later use; the titanate coupling agent in the titanate coupling agent aqueous solution is The massfraction of agent is 12%; The atomized spray coating amount of described titanate coupling age...

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
particle diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite cement using calcium carbide slag and fly ash as mixed materials, which belongs to the technical field of cement production and consists of the following materials in parts by weight: 6-10 parts of modified carbide slag, 8-12 parts of fly ash , 12~15 parts of slag, 65~70 parts of Portland cement clinker, 3~6 parts of gypsum. The present invention adds specially treated calcium carbide slag and fly ash as admixtures to the cement, making full use of waste materials, reducing the cost of cement, and protecting the natural environment. Effectively improve the comprehensive strength and weather resistance of cement, and prolong the life of cement.

Description

technical field [0001] The invention belongs to the technical field of cement production, and in particular relates to a composite cement using calcium carbide slag and fly ash as mixed materials. Background technique [0002] Cement is a powdery hydraulic cementitious material that can be mixed with water to form a plastic slurry, which can cement sand, stone and other materials, and can be hardened in the air and hardened in water. There are many types of cement, which are divided into three categories: general cement, special cement and special cement. Among them, composite cement is one of the varieties of general cement. Cement has better plasticity after mixing with water, and higher strength can be obtained after cement hardening, and the durability of cement is better. Therefore, cement is not only widely used in industrial and civil buildings, but also widely used in transportation, urban construction, agriculture, forestry, water conservancy and marine projects, a...

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 Patents(China)
IPC IPC(8): C04B11/30C04B7/24C04B7/26
CPCC04B7/24C04B7/26C04B11/30Y02P40/10
Inventor 张红卫
Owner 南宁红狮水泥有限公司