CN103466981B - Reinforced composite cement and preparation method thereof - Google Patents

Reinforced composite cement and preparation method thereof Download PDF

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Publication number
CN103466981B
CN103466981B CN201310382953.4A CN201310382953A CN103466981B CN 103466981 B CN103466981 B CN 103466981B CN 201310382953 A CN201310382953 A CN 201310382953A CN 103466981 B CN103466981 B CN 103466981B
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cement
slag
enhancement type
type complex
complex cement
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CN103466981A (en
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周建平
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Gucheng Shanshui Cement Co., Ltd
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周建平
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

The invention discloses reinforced composite cement and a preparation method thereof. The reinforced composite cement is prepared by the following steps: preparing coal ash, magnesium oxide, calcium oxide, calcium sulfate, Portland cement clinker and the balance of water into mortar; dehydrating and drying; and mixing the mortar with calcinated copper mine tailings, steel slag and river sand. Discarded industrial waste residues are used for partially replacing the Portland cement clinker for preparing the composite cement, so that the production cost is reduced, wastes are turned into treasures, environmental pollution is reduced, and through addition of the steel slag and the copper mine tailings, the compression strength and the permeability resistance of the cement can be enhanced and the physical properties of the composite cement are improved; and compared with the prior art, the reinforced composite cement can bring great environmental benefits and economic benefits to the society.

Description

A kind of enhancement type complex cement and preparation method thereof
Technical field
The present invention relates to the formula of building trade field cement, particularly relate to a kind of enhancement type complex cement.
Background technology
Make rational use of resources, reduce the waste of waste, it is a kind of developing direction of society, various waste is there is in industrial production, such as, various cinders in coal-mining industry, slag, various slags in steel industry, metallurgical solid waste residue, various carbide slags in power industry etc., if not processing and utilizing in addition, its unreasonable occupying of only piling place of being rivals in a contest is exactly problem environment being brought to significant load, and the destruction of release to environment of various waste potentially harmful substance be should not be underestimated especially in addition.
Various waste residue being applied to the preparation of composite cement, is a method turned waste into wealth, but how reasonably configures each component and its mass ratio and adopt effective preparation technology largely to have impact on ultimate compression strength and the quality of complex cement.
Therefore, need a kind of new technical scheme to solve the problem.
Summary of the invention
Goal of the invention: in order to solve the problem existing for prior art, the invention provides a kind of utilize industrial residue and river sand to replace a part of Portland clinker to prepare through calcining there is stronger ultimate compression strength, enhancement type complex cement that production cost is low and preparation method thereof.
Technical scheme: for achieving the above object, a kind of enhancement type complex cement of the present invention, be mixed according to part by weight by following component: copper ore tailings 5%-10%, slag 5%-15%, flyash 10%-30%, magnesium oxide 1%-3%, calcium oxide 10%-20%, calcium sulfate 5%-20%, river sand 2%-10%, Portland clinker 30%-60%, water surplus.
More preferred, a kind of enhancement type complex cement, is mixed according to listed as parts by weight by following component: copper ore tailings 7%, slag 7%, flyash 18%, magnesium oxide 2%, calcium oxide 13%, calcium sulfate 8%, river sand 4%, Portland clinker 38%, water surplus.
Further, the particle diameter of described slag is 2-5mm, and water content is 16-28%.
A preparation method for enhancement type complex cement, comprises the following steps:
(1) first copper ore tailings, slag, river sand are carried out calcining 1.5-1.8h at 300-500 DEG C, be cooled to room temperature after calcining, utilize grinding device to roughly grind it, being milled to fineness is 0.3-0.6mm, mixes for subsequent use;
(2) water of flyash, magnesium oxide, calcium oxide, calcium sulfate, Portland clinker and surplus is pre-mixed formation mortar, mixing limit, limit is stirred, and stir speed (S.S.) is 450-560r/min, stirs 20-30min;
(3) it is 0.3-0.6mm that slurry dehydration step (2) prepared is crushed to fineness after drying, and carries out Homogeneous phase mixing, can obtain finished cement with the mixture in step (1).
More preferred, in described step (3), dewatered drying temperature is 150-180 DEG C.
Beneficial effect: a kind of enhancement type complex cement provided by the present invention and preparation method thereof, by flyash, magnesium oxide, calcium oxide, calcium sulfate, the water of Portland clinker and surplus makes slurry dehydration dries rear and after calcining copper ore tailings, slag, river sand carries out being mixed and made into enhancement type complex cement, discarded industrial residue Some substitute Portland clinker is adopted to carry out the making of complex cement, production cost reduces, turn waste into wealth, not only reduce environmental pollution, on the other hand slag and copper ore tailings be added with the ultimate compression strength and impervious function that are beneficial to and strengthen cement, add the physicals of complex cement, the present invention compared with prior art, for society brings very large environmental benefit and economic benefit.
Embodiment
Below in conjunction with specific embodiment, explain the present invention further:
Embodiment 1:
A kind of enhancement type complex cement, is mixed according to part by weight by following component: copper ore tailings 5%, slag 5%, flyash 10%, magnesium oxide 3%, calcium oxide 20%, calcium sulfate 15%, river sand 10%, Portland clinker 30%, water surplus, the particle diameter of described slag is 2mm, and water content is 16%.
A preparation method for enhancement type complex cement, comprises the following steps:
(1) first the copper ore tailings of aforementioned proportion, slag, river sand are carried out calcining 1.8h at 300 DEG C, be cooled to room temperature after calcining, utilize grinding device to roughly grind it, being milled to fineness is 0.3mm, mixes for subsequent use;
(2) water of the flyash of aforementioned proportion, magnesium oxide, calcium oxide, calcium sulfate, Portland clinker and surplus is pre-mixed formation mortar, mixing limit, limit is stirred, and stir speed (S.S.) is 450r/min, stirs 30min;
(3) it is 0.3mm that slurry dehydration step (2) prepared is crushed to fineness after drying, and carry out Homogeneous phase mixing with the mixture in step (1), can obtain finished cement, wherein dewatered drying temperature is 150 DEG C.
Embodiment 2:
A kind of enhancement type complex cement, is mixed according to part by weight by following component: copper ore tailings 10%, slag 15%, flyash 15%, magnesium oxide 1%, calcium oxide 10%, calcium sulfate 5%, river sand 2%, Portland clinker 40%, water surplus, the particle diameter of described slag is 5mm, and water content is 28%.
A preparation method for enhancement type complex cement, comprises the following steps:
(1) first the copper ore tailings of aforementioned proportion, slag, river sand are carried out calcining 1.5h at 500 DEG C, be cooled to room temperature after calcining, utilize grinding device to roughly grind it, being milled to fineness is 0.6mm, mixes for subsequent use;
(2) water of the flyash of aforementioned proportion, magnesium oxide, calcium oxide, calcium sulfate, Portland clinker and surplus is pre-mixed formation mortar, mixing limit, limit is stirred, and stir speed (S.S.) is 560r/min, stirs 20min;
(3) it is 0.6mm that slurry dehydration step (2) prepared is crushed to fineness after drying, and carry out Homogeneous phase mixing with the mixture in step (1), can obtain finished cement, wherein dewatered drying temperature is 180 DEG C.
Embodiment 3:
A kind of enhancement type complex cement, is mixed according to part by weight by following component: copper ore tailings 7%, slag 7%, flyash 18%, magnesium oxide 2%, calcium oxide 13%, calcium sulfate 8%, river sand 4%, Portland clinker 38%, water surplus, the particle diameter of described slag is 3mm, and water content is 22%.
A preparation method for enhancement type complex cement, comprises the following steps:
(1) first the copper ore tailings of aforementioned proportion, slag, river sand are carried out calcining 1.6h at 400 DEG C, be cooled to room temperature after calcining, utilize grinding device to roughly grind it, being milled to fineness is 0.5mm, mixes for subsequent use;
(2) water of the flyash of aforementioned proportion, magnesium oxide, calcium oxide, calcium sulfate, Portland clinker and surplus is pre-mixed formation mortar, mixing limit, limit is stirred, and stir speed (S.S.) is 500r/min, stirs 25min;
(3) it is 0.5mm that slurry dehydration step (2) prepared is crushed to fineness after drying, and carry out Homogeneous phase mixing with the mixture in step (1), can obtain finished cement, wherein dewatered drying temperature is 165 DEG C.
Adopt formula of a kind of enhancement type complex cement in above-described embodiment 1-3 and preparation method thereof, the complex cement that physicals meets national cement standard requirement can be prepared, the finished cement of embodiment 1-3 is carried out quantitative measurement, test method is all undertaken by standard GB/T 10238-2005, the results are shown in Table 1:
Physicals Thickening time/min Ultimate compression strength/MPa Seepage-resistant grade/MPa
Embodiment 1 208 35.2 ≥1.5
Embodiment 2 193 35.5 ≥1.5
Embodiment 3 252 36.3 ≥1.5
Can find out from upper table, test-results shows, enhancement type complex cement prepared by preparation method of the present invention is compared with the cement prepared by traditional technology, there is more excellent thickening time, ultimate compression strength and more excellent anti-permeability performance, and the utilization of waste material of industrial residue, not only solve the stacking contaminate environment of waste, appropriation of land problem, and reduce manufacture of cement cost, achieve environmental benefit, Social benefit and economic benefit is three-in-one, there is very strong practical value.
Should be understood that, above embodiment is only not used in for illustration of the present invention and limits the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.

Claims (5)

1. an enhancement type complex cement, it is characterized in that being mixed according to part by weight by following component: copper ore tailings 5%-10%, slag 5%-15%, flyash 10%-30%, magnesium oxide 1%-3%, calcium oxide 10%-20%, calcium sulfate 5%-20%, river sand 2%-10%, Portland clinker 30%-60%, water surplus.
2. a kind of enhancement type complex cement according to claim 1, is characterized in that being mixed according to listed as parts by weight by following component: copper ore tailings 7%, slag 7%, flyash 18%, magnesium oxide 2%, calcium oxide 13%, calcium sulfate 8%, river sand 4%, Portland clinker 38%, water surplus.
3. a kind of enhancement type complex cement according to claim 1, is characterized in that: the particle diameter of described slag is 2-5mm, and water content is 16-28%.
4. the preparation method of a kind of enhancement type complex cement according to claim 1, is characterized in that comprising the following steps:
(1) first copper ore tailings, slag, river sand are carried out calcining 1.5-1.8h at 300-500 DEG C, be cooled to room temperature after calcining, utilize grinding device to roughly grind it, being milled to fineness is 0.3-0.6mm, mixes for subsequent use;
(2) water of flyash, magnesium oxide, calcium oxide, calcium sulfate, Portland clinker and surplus is pre-mixed formation mortar, mixing limit, limit is stirred, and stir speed (S.S.) is 450-560r/min, stirs 20-30min;
(3) it is 0.3-0.6mm that slurry dehydration step (2) prepared is crushed to fineness after drying, and carries out Homogeneous phase mixing, can obtain finished cement with the mixture in step (1).
5. the preparation method of a kind of enhancement type complex cement according to claim 4, is characterized in that: in described step (3), dewatered drying temperature is 150-180 DEG C.
CN201310382953.4A 2013-08-28 2013-08-28 Reinforced composite cement and preparation method thereof Active CN103466981B (en)

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FI20165326A (en) * 2016-04-15 2017-10-16 Solid Liner Oy Method for manufacturing mineral sealing structure and mineral sealing structure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573588A (en) * 1994-02-14 1996-11-12 Board Of Regents, The University Of Texas System Concretes containing Class C fly ash that are stable in sulphate environments
CN101434460A (en) * 2007-11-15 2009-05-20 苏艳杰 Color cement made from copper-smelting slag

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573588A (en) * 1994-02-14 1996-11-12 Board Of Regents, The University Of Texas System Concretes containing Class C fly ash that are stable in sulphate environments
CN101434460A (en) * 2007-11-15 2009-05-20 苏艳杰 Color cement made from copper-smelting slag

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
钢渣配料在五级旋风预热器窑上试生产水泥熟料;袁福海;《水泥》;20030531(第5期);第15-16页 *

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