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Formula and process method for preparing ceramsite by using overhaul slag

A process method and technology for overhauling slag are applied in the field of formulating ceramsite by using overhauling slag to achieve the effects of reducing environmental pollution, saving materials and energy, and saving land.

Pending Publication Date: 2021-07-27
湖南国发控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, people are currently facing two problems: one is that ceramsite needs to find new raw materials for production, and the production process of ceramsite needs to be improved; the other is that overhaul slag needs to be processed as resources as possible

Method used

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  • Formula and process method for preparing ceramsite by using overhaul slag
  • Formula and process method for preparing ceramsite by using overhaul slag
  • Formula and process method for preparing ceramsite by using overhaul slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] refer to figure 1 , the following process steps are adopted in this embodiment:

[0030] Step 1. Measure by weight: 25 parts of overhaul slag with more than 50% decarburization, 40 parts of fly ash, 20 parts of kaolin, 10 parts of feldspar, and 5 parts of silicon carbide; crush all raw materials and pour them into the mixer, Stir to make it evenly mixed;

[0031] Step 2. Pour the mixture into the granulator for granulation, add water according to the mixture: water = 1:0.1 for granulation, and obtain spherical materials with a size of 0.5cm to 1.0cm;

[0032] Step 3: put the spherical material into a drying oven, and dry it for 2 hours at a temperature of 120°C;

[0033] Step 4. Put the dried spherical material into a double-cylinder rotary kiln for calcination. The first cylinder is a preheating kiln with a rotational speed of 3.5 r / min. The second barrel is a roasting kiln with a rotating speed of 2.0r / min; the thermal system adopted for roasting is: the initial pr...

Embodiment 2

[0035] Adopt following process step in the present embodiment:

[0036] Step 1. Measure by weight: 30 parts of overhaul slag decarburized by more than 50%, 35 parts of fly ash, 20 parts of kaolin, 10 parts of feldspar, and 5 parts of silicon carbide; crush all raw materials and pour them into the mixer, Stir to make it evenly mixed;

[0037] Step 2. Pour the mixture into the granulator for granulation, add water according to the mixture: water = 1:0.15 for granulation, and obtain a spherical material with a size of 0.5cm to 1.0cm;

[0038] Step 3, the spherical material is dried in a drying oven for 2 hours at a temperature of 120°C;

[0039] Step 4. Put the dried spherical material into a double-cylinder rotary kiln for calcination. The first cylinder is a preheating kiln with a rotational speed of 3.5 r / min. The second barrel is a roasting kiln with a rotation speed of 2.0r / min; the thermal system adopted for roasting is: the initial preheating temperature in the ball feed...

Embodiment 3

[0041] Adopt following process step in the present embodiment:

[0042] Step 1. Measure by weight: 45 parts of overhaul slag decarburized by more than 50%, 20 parts of fly ash, 13 parts of kaolin, 20 parts of feldspar, 2 parts of silicon carbide; crush all raw materials and pour them into the mixer, Stir to make it evenly mixed;

[0043] Step 2: Pour the mixture into the granulator for granulation, add water according to the ratio of mixture: water = 1:0.2 for granulation, and obtain spherical materials with a size of 0.5 cm to 1.0 cm.

[0044] Step 3: Dry the spherical material in a drying oven for 2.5 hours at a temperature of 120°C;

[0045] Step 4. Put the dried spherical material into a double-cylinder rotary kiln for calcination. The first cylinder is a preheating kiln with a rotational speed of 3.5 r / min. The second cylinder is a roasting kiln with a rotation speed of 2.0r / min; the thermal system adopted for roasting is: the initial preheating temperature in the ball ...

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Abstract

The invention relates to a formula and a process method for preparing ceramsite by using overhaul slag, wherein the raw materials comprise, by weight, 25-50 parts of overhaul slag, 20-40 parts of fly ash, 10-30 parts of kaolin, 10-20 parts of a sintering aid, and 1-5 parts of a foaming substance, the raw materials are mixed, and the mixture is subjected to roasting, cooling and other conventional ceramsite production process treatments to produce a high-quality ceramic product. According to the invention, by popularizing and using the ceramsite production method, raw materials for ceramsite production are expanded, dependence and use on conventional raw materials such as clay and shale in the ceramsite manufacturing industry are relieved, and the problems of water and soil loss and the like are solved; and resourceful treatment of the overhaul slag is achieved, the physical and chemical activity of components (such as carbon element) of the overhaul slag is fully utilized, and materials and energy are saved.

Description

technical field [0001] The invention relates to a preparation method of ceramsite, in particular to a formula and a process method for preparing ceramsite by using overhaul slag. Background technique [0002] As a basic building material, ceramsite has received great attention due to its light weight, heat preservation, waste utilization, and environmental protection. The particle size of ceramsite is generally 5-20mm, and the maximum particle size is 25mm, which can be used to replace gravel and pebbles in concrete. Lightness is the most important point among many excellent properties of ceramsite, and it is also the main reason why it can replace heavy sandstone. The internal structure of ceramsite is characterized by fine and dense honeycomb micropores. These micropores are all closed, not connected. It is formed because the gas is wrapped into the shell, which is the main reason for the lightness of ceramsite; in addition, the surface of ceramsite has a hard shell, wh...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B33/135C04B38/02C04B38/06
CPCC04B33/1324C04B33/1352C04B38/009C04B2235/3208C04B2235/3463C04B2235/3272C04B2235/3826C04B2235/3267C04B2235/422C04B2235/656C04B2235/6567Y02P40/60
Inventor 黄强卢丰玉黄治齐
Owner 湖南国发控股有限公司