CN211471243U - System for producing aluminate cement by using aluminum profile sludge - Google Patents
System for producing aluminate cement by using aluminum profile sludge Download PDFInfo
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- CN211471243U CN211471243U CN201922025175.9U CN201922025175U CN211471243U CN 211471243 U CN211471243 U CN 211471243U CN 201922025175 U CN201922025175 U CN 201922025175U CN 211471243 U CN211471243 U CN 211471243U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a system for produce aluminate cement with aluminium alloy mud belongs to solid useless utilization field, including raw material system, system and cement system of firing into. The aluminate cement prepared by the system can reduce the production cost of the aluminate cement, realize the resource utilization of hazardous wastes, and open up a brand new way for the utilization of the hazardous wastes.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a system for producing aluminate cement by using aluminum profile sludge.
Background
As a source of the aluminum profile industry, raw ore resources in the aluminum ore industry are increasingly deficient. According to statistics, the global bauxite has been proved to have about 280 hundred million tons of reserves and rich mineral resources. However, the storage capacity of bauxite only accounts for 4% of the world in China, and high-quality bauxite resources are scarce. In recent years, bauxite product positions slide down continuously, and resources are seriously short, so that the technical and economic indexes of industries such as alumina, high-alumina cement, refractory materials and the like which take bauxite as a raw material in China are worsened, the product cost is high, the market competitiveness is low, and the development of the industries is severely restricted. Therefore, reasonable utilization of domestic low-grade aluminum ore resources while occupying overseas high-quality bauxite resources as much as possible has become a strategic resource direction in a period of time in the future.
A large amount of colloidal waste liquid is generated in the surface treatment process of the aluminum profile, the sludge after precipitation, filter pressing and other treatment is commonly called aluminum profile sludge, the aluminum profile sludge is waste generated in the processing process of the aluminum profile, the content of alumina in the dry aluminum profile sludge is about 65-80%, the content of conventional silica, calcium oxide, iron oxide and the like is about 18-33%, and the balance is a small amount of impurities and heavy metals. About 160 ten thousand tons of aluminum profile sludge is generated in 2016, the amount is increased by 10% compared with 2015, the amount is increased year by year along with the increase of aluminum yield, the amount is increased to about 195 ten thousand tons in 2020, and the large amount of sludge has great threat to the ecological environment.
Along with the steady development of the aluminum profile industry, the defects of low aluminum profile production efficiency, multiple pollution links and the like are increasingly highlighted. During the processes of degreasing, acid etching, alkali etching, neutralization, anodic oxidation, coloring, hole sealing and spraying of the aluminum profile, a large amount of waste liquid generated is subjected to preliminary filter pressing treatment to form wet sludge with the water content higher than 80% and high viscosity, the wet sludge contains a certain amount of heavy metals and has leaching toxicity, and the wet sludge is easy to cause damage to organisms, water bodies and soil, which is difficult to repair after being exposed to the environment for a long time. At present, enterprises generally adopt pretreatment means such as filter pressing and the like to reduce the water content of the aluminum profile sludge, primarily reduce the water content of the aluminum profile sludge, and finally transfer the aluminum profile sludge to dangerous waste landfill plants for landfill or serve as a production raw material of an aluminum water purifying agent. Under the severe environmental protection regulatory policy and the industrial development trend of green standardization, the disposal dilemma and the increasing production of the aluminum profile sludge are the troublesome problems faced by enterprises. Aluminate cement is a special cement with the characteristics of quick setting, early strength, high temperature resistance, quick hardening at low temperature and the like, plays an important role in industries such as building materials, metallurgy, electric power, chemical industry and the like, generally takes limestone and bauxite as raw materials, and the yield and quality of products highly depend on the taste and supply amount of the bauxite.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a system for producing aluminate cement by using aluminum profile sludge.
In order to achieve the purpose, the invention adopts the technical scheme that:
a system for producing aluminate cement by using aluminum profile sludge comprises:
(1) raw material system
The raw material grinding system is connected with the raw material batching system, the obtained mixed material is ground to obtain raw materials, and the raw material storage and pre-homogenization system is connected with the raw material grinding system, and stores and homogenizes the obtained raw materials;
(2) firing system
The system comprises a fuel system, a raw material preheating and pre-decomposing system, a clinker calcining system and a clinker cooling system, wherein the fuel system is connected with the raw material preheating and pre-decomposing system and the clinker calcining system to supply fuel to the raw material preheating and pre-decomposing system and the clinker calcining system;
(3) cement system
The system comprises a clinker metering system, a cement grinding system and a cement storage tank, wherein the cement batching system is connected with a clinker cooling system to complete the mixing and batching of cement raw materials, the cement grinding system is connected with the cement batching system to grind the obtained mixed materials, and the cement storage tank is connected with the cement grinding system to store and homogenize the obtained aluminate cement.
The raw material grinding system is a roller press final grinding system, a vertical mill grinding system or a ball mill grinding system;
the fuel adopted by the fuel system is light diesel oil, heavy diesel oil, natural gas or bituminous coal;
the raw material preheating and pre-decomposition system is a preheating and pre-decomposition system in the form of a combination of a plurality of stages of cyclones, a combination of a vertical cylinder as a main part or a combination of a cyclone and a vertical cylinder (or a vortex chamber) in a mixing way.
The clinker calcining system is a melting system or a sintering system;
the cement grinding system is a roller press final grinding system, a vertical mill grinding system or a ball mill grinding system.
The melting system is an electric furnace, a blast furnace or a reverberatory furnace, and the sintering system is a rotary kiln, a down-draft kiln or a tunnel kiln.
According to the system, the method for producing aluminate cement by using the aluminum profile sludge can be realized, and comprises the following steps:
(1) preparation of raw meal
Taking raw materials including limestone, bauxite and aluminum profile sludge, mixing the raw materials, feeding the mixture into a grinding system for grinding to obtain raw materials, and conveying the raw materials to a continuous homogenizing warehouse for storage and homogenization;
(2) firing of raw meal
The homogenized raw material is sent into a kiln for calcination and is cooled to form clinker;
(3) cement production
And sending the clinker into a cement grinding system for grinding to obtain aluminate cement, and conveying the aluminate cement to a cement storage for storage and homogenization.
The proportions of the limestone, the bauxite and the aluminum profile sludge are different according to the components of the raw materials and the model of the product; when the mass percentages of limestone, aluminum profile sludge and bauxite are 25-35%: 55-65%: when the content of the calcium carbonate is 0-10%, obtaining the CA50 aluminate cement, wherein the mass percentage of limestone, aluminum profile sludge and bauxite is 20-35%: 65-75%: when the content is 0-5%, the CA70 aluminate cement is obtained.
In the step (1), the aluminum profile sludge is waste generated in the aluminum profile processing process, the content of aluminum oxide in the dried aluminum profile sludge is about 65-80%, the content of conventional silicon oxide, calcium oxide, iron oxide and the like is about 18-33%, and the balance is a small amount of impurities and heavy metals.
In the step (2), the calcining temperature is 1300-1450 ℃.
In the step (2), the calcining adopts a melting method or a sintering method, and the clinker is prepared by melting or sintering and takes calcium aluminate and calcium dialuminate as main composition phases.
Compared with the prior art, the system provides a new idea for recycling the aluminum profile sludge, millions of tons of dangerous wastes can be treated every year after popularization and use, and the system has important practical significance and strategic value on sustainable resources, economic green development and ecological environment protection in China.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the drawings and examples.
As shown in figure 1, the system for producing aluminate cement by using aluminum profile sludge comprises:
(1) raw material system
The raw material grinding system is connected with the raw material batching system, the obtained mixed material is ground to obtain raw materials, the raw material storage and pre-homogenization system is connected with the raw material grinding system, and the obtained raw materials are stored and homogenized; the raw material grinding system can adopt a roller press final grinding system, a vertical mill grinding system or a ball mill grinding system and the like.
(2) Firing system
The system comprises a fuel system, a raw material preheating and pre-decomposition system, a clinker calcining system and a clinker cooling system, wherein the fuel system is connected with the raw material preheating and pre-decomposition system and the clinker calcining system to supply fuel to the raw material preheating and pre-decomposition system and the clinker calcining system; the fuel system takes light diesel oil, heavy diesel oil, natural gas or bituminous coal as fuel. The raw material preheating and pre-decomposing system is a preheating and pre-decomposing system in the form of a combination of a plurality of stages of cyclones, a combination of a vertical cylinder as a main part or a combination of a cyclone and a vertical cylinder (or a vortex chamber) in a mixing way. The clinker calcining system is a melting system (an electric furnace, a blast furnace or a reverberatory furnace) or a sintering system (a rotary kiln, a down-draft kiln or a tunnel kiln);
(3) cement system
The system comprises a clinker metering system, a cement grinding system and a cement storage tank, wherein the cement batching system is connected with a clinker cooling system to complete the mixing and batching of cement raw materials, the cement grinding system is connected with the cement batching system to grind the obtained mixed materials, and the cement storage tank is connected with the cement grinding system to store and homogenize the obtained aluminate cement. The cement grinding system can be a roller press final grinding system, a vertical mill grinding system or a ball mill grinding system.
According to the system, the method for producing aluminate cement by using the aluminum profile sludge comprises the following steps:
(1) preparation of raw meal
Taking raw materials including limestone, bauxite and aluminum profile sludge, mixing the raw materials, feeding the mixture into a grinding system for grinding to obtain raw materials, and conveying the raw materials to a continuous homogenizing warehouse for storage and homogenization;
(2) firing of raw meal
And (3) feeding the homogenized raw material into a kiln for calcination at 1300-1450 ℃, wherein the calcination process is a melting method or a sintering method, and the clinker taking the monocalcium aluminate and the calcium dialuminate as main component phases is obtained after cooling.
(3) Cement production
And sending the clinker into a cement grinding system for grinding to obtain aluminate cement, and conveying the aluminate cement to a cement storage for storage and homogenization. The product produced by taking limestone, bauxite and aluminum profile sludge as raw materials meets the requirements of GB/T201 aluminate cement on chemical components of the aluminate cement.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. The utility model provides a system for with aluminium alloy mud production aluminate cement which characterized in that includes:
the raw material system comprises a raw material batching system, a raw material grinding system and a raw material storing and pre-homogenizing system, wherein the raw material batching system finishes the mixing and batching of raw materials, the raw material grinding system is connected with the raw material batching system, the obtained mixed materials are ground to obtain raw materials, the raw material storing and pre-homogenizing system is connected with the raw material grinding system, and the obtained raw materials are stored and homogenized;
the system comprises a combustion system, a raw material preheating and pre-decomposition system, a clinker calcination system and a clinker cooling system, wherein the fuel system is connected with the raw material preheating and pre-decomposition system and the clinker calcination system to supply fuel to the raw material preheating and pre-decomposition system and the clinker calcination system;
the cement system comprises a clinker metering system, a cement grinding system and a cement storage tank, wherein the cement batching system is connected with a clinker cooling system to complete mixing batching of cement raw materials, the cement grinding system is connected with the cement batching system to grind the obtained mixed batching, and the cement storage tank is connected with the cement grinding system to store and homogenize the obtained aluminate cement.
2. The system for producing aluminate cement by using aluminum profile sludge as claimed in claim 1, wherein:
the raw material grinding system is a roller press final grinding system, a vertical mill grinding system or a ball mill grinding system;
the fuel adopted by the fuel system is light diesel oil, heavy diesel oil, natural gas or bituminous coal;
the raw material preheating and pre-decomposition system is a preheating and pre-decomposition system which mainly comprises a plurality of stages of cyclone cylinders and a vertical cylinder or a combination of a cyclone cylinder and a vertical cylinder or a vortex chamber;
the clinker calcining system is a melting system or a sintering system;
the cement grinding system is a roller press final grinding system, a vertical mill grinding system or a ball mill grinding system.
3. The system for producing aluminate cement by using aluminum profile sludge as claimed in claim 2, wherein the melting system is an electric furnace, a blast furnace or a reverberatory furnace, and the sintering system is a rotary kiln, a down-draft kiln or a tunnel kiln.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922025175.9U CN211471243U (en) | 2019-11-21 | 2019-11-21 | System for producing aluminate cement by using aluminum profile sludge |
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| CN201922025175.9U CN211471243U (en) | 2019-11-21 | 2019-11-21 | System for producing aluminate cement by using aluminum profile sludge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307516A (en) * | 2021-05-14 | 2021-08-27 | 同济大学 | Method for preparing sulphoaluminate cement clinker from aluminum profile waste residues |
| CN113461348A (en) * | 2021-05-14 | 2021-10-01 | 同济大学 | Method for preparing sulphoaluminate cement clinker by using aluminum profile waste liquid |
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2019
- 2019-11-21 CN CN201922025175.9U patent/CN211471243U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307516A (en) * | 2021-05-14 | 2021-08-27 | 同济大学 | Method for preparing sulphoaluminate cement clinker from aluminum profile waste residues |
| CN113461348A (en) * | 2021-05-14 | 2021-10-01 | 同济大学 | Method for preparing sulphoaluminate cement clinker by using aluminum profile waste liquid |
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