Manufacture of sulphur aluminate cements with electrolytic manganesium residue and method of manufacturing the same

A technology similar to sulphoaluminate and electrolytic manganese slag, applied in the field of cement, can solve the problems of unfavorable calcination, little contribution to environmental pollution, and less volatile matter, and achieve environmental protection, good cement burnability, and cement adaptability wide effect

CN101367629AInactive Publication Date: 2009-02-18CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2009-02-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

A sulphate-aluminium-like cement produced by using electrolytic manganese slag and the preparation method of the cement relate to the production of the sulphate-aluminium-like by using industrial wastes and the preparation method of the cement. The raw materials of the cement clinker of the invention contain limestone, electrolytic manganese slag, kaolin and soft coal, and dihydrate gypsum is added to the fired cement clinker; the preparation method comprises the following steps: using the limestone, electrolytic Manganese slag, kaolin and soft coal as the raw materials of the clinker; first, levigating and homogenizing the raw materials, and calcining the raw materials into the clinker at a relatively low temperature; then adding the dihydrate gypsum to the clinker according to the requirement and then levigating the mixture to be the finished product. The cement is characterized in that the firing temperature ranges from 150 DEG C to 200 DEG C which is lower than that of the common Portland cement, and the energy-saving advantage is obvious; the mixture proportion range of the components is wide; the mixing amount of the manganese slag is great; and the fired cement has wide application, and so on. The preparation method can be widely used for producing the sulphate-aluminium-like cement by using electrolytic the manganese slag, and is in particular applicable to the production of early strength cement, rapid-hardening high-strength cement, expansive cement and low-alkali cement, and the like.
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Description

technical field

[0001] The invention belongs to the technical field of cement, and in particular relates to preparing sulphoaluminate-like cement by using industrial waste and a preparation method thereof. Background technique

[0002] Electrolytic manganese slag is a solid waste produced in the process of industrial production of electrolytic manganese and manganese dioxide. Its fineness reaches 0.15mm, and the moisture content of the original electrolytic manganese slag is 30% to 40%, which is in the form of agglomeration. my country is the world's largest producer of manganese, and its annual output of manganese in recent years has accounted for more than 90% of the world's total output. One ton of electrolytic manganese produced by the manganese carbonate method produces an average of 6.5 tons of electrolytic manganese slag. The electrolytic manganese slag produced in my country reaches several million tons every year, and the amount of electrolytic manganese slag stored...

Examples

Embodiment 1

[0031] A raw material for producing sulphoaluminate cement clinker by using electrolytic manganese slag and its mass percentage are:

[0032] Limestone: 36.2%

[0033] Electrolytic manganese slag: 57.3%

[0034] Kaolin: 2.0%

[0035] Bituminous coal: 4.5%

[0036] Add 10% of dihydrate gypsum in the fired cement clinker.

[0037] The specific steps of a preparation method for producing sulphoaluminate cement by using electrolytic manganese slag are as follows:

[0038] (1) material preparation

[0039] According to the ratio of limestone: electrolytic manganese slag: kaolin: bituminous coal mass percentage is 36.2%: 57.3%: 2.0%: 4.5%, the raw materials of clinker are prepared.

[0040] (2) Grinding and homogenizing

[0041] After step (1) is completed, the limestone, electrolytic manganese slag and kaolin are ground with a ball mill and put into storage for homogenization. The bituminous coal is separately ground and homogenized by a ball mill so that it can be fully bur...

Embodiment 2

[0047] A raw material for producing sulphoaluminate cement clinker by using electrolytic manganese slag and its mass percentage are:

[0048] Limestone: 37.3%

[0049]Electrolytic manganese slag: 16.4%

[0050] Kaolin: 37.3%

[0051] Bituminous coal: 9.0%

[0052] Add 0% dihydrate gypsum to the fired cement clinker (that is, do not add dihydrate gypsum).

[0053] The specific steps of a preparation method for producing sulphoaluminate cement by using electrolytic manganese slag are as follows:

[0054] (1) material preparation

[0055] According to the ratio of limestone: electrolytic manganese slag: kaolin: bituminous coal mass percentage is 37.3%: 16.4%: 37.3%: 9.0%, the raw materials of clinker are prepared.

[0056] (2) Grinding and homogenizing

[0057] With embodiment 1.

[0058] (3) Burning cement clinker

[0059] Same as Example 1, the features are: the calcination temperature in the kiln is 1300° C., and the calcination time is 10 minutes.

[0060] (4) Prepar...

Embodiment 3

[0063] The mass percent of a component and the clinker raw material for producing sulphoaluminate cement clinker by using electrolytic manganese slag is:

[0064] Limestone: 56.2%

[0065] Electrolytic manganese slag: 30.6%

[0066] Kaolin: 5.1%

[0067] Bituminous coal: 8.1%

[0068] Add 7% dihydrate gypsum in the fired cement clinker.

[0069] The specific steps of a preparation method for producing sulphoaluminate cement by using electrolytic manganese slag are as follows:

[0070] (1) material preparation

[0071] According to the ratio of limestone: electrolytic manganese slag: kaolin: bituminous coal mass percentage is 56.2%: 30.6%: 5.1%: 8.1%, the raw materials of clinker are prepared.

[0072] (2) Grinding and homogenizing

[0073] With embodiment 1.

[0074] (3) Burning cement clinker

[0075] Same as Example 1, the features are: the calcination temperature in the kiln is 1250° C., and the calcination time is 20 minutes.

[0076] (4) Preparation of finished p...