CN107540253A - A kind of Tungsten tailing common portland cement and preparation method thereof - Google Patents

A kind of Tungsten tailing common portland cement and preparation method thereof Download PDF

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Publication number
CN107540253A
CN107540253A CN201710852924.8A CN201710852924A CN107540253A CN 107540253 A CN107540253 A CN 107540253A CN 201710852924 A CN201710852924 A CN 201710852924A CN 107540253 A CN107540253 A CN 107540253A
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tungsten tailing
lime stone
superfine powder
cement
portland cement
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CN107540253B (en
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吴秋红
崔辰
纪友红
曾荣
覃鹏飞
杨成
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China Resources Cement Fuchuan Ltd
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China Resources Cement Fuchuan Ltd
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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 present invention provides a kind of Tungsten tailing common portland cement.The common portland cement is made up of the raw material of following percentage by weight:Clinker:53.00~85.00%;Ardealite:0~2.50%;Desulfurated plaster:1.50~7.50%;Lime stone:4.00~15.00%;High silica sand rock:0~1.80%;Bottom slag:1.50~7.50%;Flyash:0~10.00%;Active superfine powder:0.50~32.50%;The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.Also disclose the preparation method of the common portland cement.The common portland cement adds Tungsten tailing and dolomitic lime stone mixed powder, strengthens the mobility and intensity of cement, while improves the utilization rate of Tungsten tailing and dolomitic lime stone and alleviate the harm to caused by environment.

Description

A kind of Tungsten tailing common portland cement and preparation method thereof
Technical field
The present invention relates to a kind of building material field, and in particular to a kind of Tungsten tailing common portland cement and its preparation side Method.
Background technology
Portland cement is widely used to industry and civil buildings, in many aspect performances as six big general-purpose cements Better than Portland cement.The cement mixed again using various active mixing material, the production cost of cement can be reduced, is relatively mixed The cement of single mixing material has strength advantage and excellent physical and mechanical property.Flyash equal industrial residue is as mixing material It is widely used in the fields such as concrete, cement, but in the last few years, supply falls short of demand for flyash equal industrial residue, quality It is difficult to meet demand.
Tungsten tailing is that tungsten ore is chosen heel row containing tungsten mineral therein after levigate and put, the solids of the big conglomeration of the thin moisture content of particle Material.Generally, Tungsten tailing caused by production tungsten product, it is transported to and builds tailing dam stockpiling or arbitrarily store up field, take soil Ground resource, flow into river and cause water pollution, airborne dust pollutes to air after Exposure to Sunlight, is detrimental to health.Provided from Tungsten tailing Source actual conditions are set out, and are carried out Tungsten tailing comprehensive utilizating research, are realized Tungsten tailing higher value application, to improving resource utilization, Improve the ecological environment, be of great significance.
Current comprehensive utilization of the domestic relevant industries to Tungsten tailing mainly includes valency component recovery and other for preparing The broad aspect of material two, wherein preparing other materials has:Manufacture devitrified glass, biological ceramic particle, mineral polymeric material, ceramic tile and cement Deng.But it is most of recycling difficulty to be present big, and Tungsten tailing pellet moisture is big, and the disposal technology difficulty such as transport is big; The problems such as discharge continues and discarded amount is big.Meanwhile Tungsten tailing be directly used in cement mixture production when, workability is bad, intensity Not up to technical requirements, exist influence into mill integrate Moisture high UCL, blanking putty, mill tail gather dust paste bag the problems such as.
The patent of invention of application number 201510126261.2 discloses a kind of sulfate resisting Portland cement and its preparation side Method, expect Tungsten tailing, chromium slag and iron-tion slag as producer, be advantageous to the re-using of discarded object, but simply by Tungsten tailing Crush, it is still no to solve the problem of Tungsten tailing workability is bad, and activity is relatively low well.Application number 201410242640.3 Patent of invention discloses a kind of Tungsten tailing cement mixture and its application, and through mechanical activation or chemical activation prepared by Tungsten tailing into water Cement mixture, the scale for realizing Tungsten tailing utilize, and can substantially meet manufacture of cement demand.But the intensity of the cement Just reach standard, used in P.O42.5 cement, intensity can only achieve 46.4, can not meet that production improves constantly now Demand.Therefore, there is an urgent need to find it is a kind of it is safe, economical, efficiently dispose method, improve the comprehensive utilization of Tungsten tailing Rate, while a kind of economic and practical cement mixture is provided.
The content of the invention
One of goal of the invention of the present invention is, in view of the above-mentioned problems, providing a kind of Tungsten tailing common portland cement, adds The active superfine powder that Tungsten tailing is prepared with dolomitic lime stone combined grinding, solves the problems, such as that Tungsten tailing workability is bad, and improve The activity of Tungsten tailing, strengthens the mobility and intensity of cement, while improves utilization rate and the alleviation of Tungsten tailing and dolomitic lime stone The harm to caused by environment.
To reach above-mentioned purpose, the technical solution adopted in the present invention is:
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:53.00~85.00%;Ardealite:0~2.50%;Desulfurated plaster:1.50~7.50%;Lime Stone:4.00~15.00%;High silica sand rock:0~1.80%;Bottom slag:1.50~7.50%;Flyash:0~10.00%;It is living Property superfine powder:0.50~32.50%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.
As a kind of preferable scheme, when the cement is composite Portland cement, by the raw material of following percentage by weight It is made:Clinker:53.00~75.00%;Ardealite:0~2.50%;Desulfurated plaster:1.50~7.50%;Lime stone: 1.00~15.00%;High silica sand rock:0~1.80%;Bottom slag:0.50~7.50%;Flyash:0~10.00%;Activity Superfine powder:5.00~30.00%;The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.
As a kind of preferable scheme, when the cement is Portland cement, by the raw material of following percentage by weight It is made:Clinker:80.00~85.00%;Ardealite:0~2.50%;Desulfurated plaster:1.50~7.50%;Lime stone: 1.00~15.00%;High silica sand rock:0~1.80%;Bottom slag:0.50~7.50%;Flyash:0~10.00%;Activity Superfine powder:0.50~10.00%;The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.
As a kind of preferable scheme, the dolomitic lime stone is stone of the magnesia mass percent 3.5~12.6% Lime stone.
As a kind of preferable scheme, the ratio of Tungsten tailing and dolomitic lime stone is 1 in the active superfine powder:4~1.
As a kind of preferable scheme, the active superfine Powder Particle Size is that 45 μm of square hole screens tail over≤11%.
As a kind of preferable scheme, the chemical composition of the clinker is:SiO2For 15.60~22.80%, Al2O3 For 3.50~5.80%, Fe2O3It is that 60.00~68.50%, MgO is 2.50~4.50%, SO for 2.10~6.20%, CaO3 For 0.10~1.00%.
As a kind of preferable scheme, 3 days Kang pressure Du≤30 of the clinker, 28 days Kang pressure Du≤57.
As a kind of preferable scheme, SO in the desulfurated plaster3>=40.0%, the crystallization water >=15.0%, outer water≤ 15.0%, acid non-soluble substance≤3.0%.
The two of the goal of the invention of the present invention are to provide a kind of preparation method of Tungsten tailing common portland cement, technique letter Single, the cement produced is higher than national standard, has saved cost.
A kind of preparation method of Tungsten tailing common portland cement, comprises the following steps:
It is prepared by S1, active superfine powder
1) Tungsten tailing in outdoor drying or is dried to moisture less than 14%;
2) it is milled after the Tungsten tailing after step 1) processing is well mixed with dolomitic lime stone, fineness controls 45 μm of square hole screens ≤ 11% is tailed over, moisture≤2%, obtains active superfine powder;
It is prepared by S2, cement
Clinker, ardealite, bottom slag, desulfurated plaster, flyash, lime stone, high silica sand rock are added into grinding aid powder Mill, mill tail incorporation active superfine powder is well mixed to be made finished cement.
As a kind of preferred scheme, in step S2, grinding control specific surface area >=350m2/Kg, finished cement is made.
Due to using above-mentioned technical proposal, the invention has the advantages that:
1. common portland cement of the present invention, there is provided a kind of Tungsten tailing, dolomitic lime stone utilize effective new Approach, Tungsten tailing, the utilization rate of dolomitic lime stone are improved, turns waste into wealth, barren rock heap buried etc. can be alleviated and endangered to caused by environment.
2. common portland cement of the present invention, active superfine powder is added, the active superfine powder is by Tungsten tailing Dried with dolomitic lime stone, mix and grinding is made, there is higher activity, the intensity of cement can be significantly improved.By high magnesite Lime stone mixes milling with Tungsten tailing, can not only improve the activity of Tungsten tailing, so as to improve the performance of concrete, solves tungsten tail The problem of ore deposit workability is bad;And be advantageous to effective recycling of dolomitic lime stone.
It is that 45 μm of square hole screens tail over≤11% that Tungsten tailing and dolomitic lime stone are mixed into milling to granularity first, maximum can be swashed Send out the activity of Tungsten tailing.Secondly, the ratio of Tungsten tailing and dolomitic lime stone is 1:4~1 active superfine powder prepared are as cement During mixing material, the performance of the cement of preparation is relatively high and stable.Wherein, when the ratio of Tungsten tailing and dolomitic lime stone is 1:When 1, water Mud intensity highest.
3. common portland cement preparation method of the present invention, Tungsten tailing is first dried to moisture less than 14%, solution Tungsten tailing particle of having determined is thin, easy to knot groups, influence into mill integrate Moisture high UCL, blanking putty, mill tail gather dust paste bag the problems such as.By tungsten Mine tailing and dolomitic lime stone are milled uses jointly, and grind tail addition, solve the problems, such as that Tungsten tailing workability is bad.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
For Tungsten tailing moisture content used in the present invention more than 15%, specific composition is as follows:
SiO2 61.79%, Al2O3 13.65%, Fe2O3 4.93%, CaO 5.60%, MgO 1.90%, SO3 0.30%, alkali content 2.00%, loss on ignition 6.55%.
Experimental comparison detects the intensity of active superfine powder, the use foundation as cement mixture.
Table 1. concentrates the intensity ratio (%) of admixture
As it can be seen from table 1 according to Tungsten tailing:Dolomitic lime stone=1:1 and 1:The small grinding-in superfine powder of 4 ratios, 45 μm When fineness respectively reaches 10%, compared with flyash, intensity is suitable, and powder is ground to obtain better than stone flour and Tungsten tailing.It can answer completely For manufacture of cement.
Embodiment 1
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:4.00%;Bottom slag:6.00%;Lime stone:11.00%;Flyash: 8.00%;Active superfine powder:8.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 10%.
A kind of preparation method of Tungsten tailing common portland cement, comprises the following steps:
It is prepared by S1, active superfine powder
1) Tungsten tailing in outdoor drying or is dried to moisture in 12%;
2) it is milled after the Tungsten tailing after step 1) processing is well mixed with dolomitic lime stone, fineness controls 45 μm of square hole screens 10% is tailed over, moisture 1.5%, obtains active superfine powder;
It is prepared by S2, cement
Clinker, bottom slag, desulfurated plaster, lime stone are well mixed, add grinding aid, grinding control specific surface area ≥ 350m2/Kg, finished cement is made.
Embodiment 2
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:4.00%;Bottom slag:2.00%;Lime stone:11.00%;Flyash: 6.00%;Active superfine powder:14.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 11%.
Embodiment 3
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:4.00%;Bottom slag:2.00%;Lime stone:11.00%;Flyash: 6.00%, active superfine powder:14.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.According to Tungsten tailing:It is high Magnesite lime stone=1:2 ratio prepares superfine powder, and 45 μm of fineness reach 11%.
Embodiment 4
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:4.00%;Bottom slag:2.00%;Lime stone:11.00%;Flyash: 6.00%, active superfine powder:14.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.According to Tungsten tailing:It is high Magnesite lime stone=1:4 ratio prepares superfine powder, and 45 μm of fineness reach 11%.
Embodiment 5
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:4.00%;Bottom slag:4.00%;Lime stone:13.00%;Flyash: 6.00%, active superfine powder:10.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 10%.
Embodiment 6
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:4.00%;Bottom slag:5.00%;Lime stone:13.00%;Activity is super Fine powder:15.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 11%.
Embodiment 7
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:5.00%;Bottom slag:2.00%;Lime stone:7.00%;Active superfine Powder:20.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 11%.
Embodiment 8
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:3.00%;Bottom slag:1.00%;Lime stone:3.00%;Active superfine Powder:30.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 11%.
Comparative example 1
A kind of common portland cement, it is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:4.50%;Bottom slag:2.50%;Lime stone:14.20%;Flyash: 15.80%.
A kind of 2 common portland cement of comparative example, is made up of the raw material of following percentage by weight:
Clinker:63.00%;Desulfurated plaster:4.50%;Bottom slag:2.50%;Lime stone:14.20%;Tungsten tailing: 15.80%.
Embodiment 1-8 be active superfine powder in composite Portland cement (P.C32.5R cement) application, use water The chemical composition of mud clinker such as table 2, components in desulfurization gypsum such as table 3, performance test is carried out respectively with comparative example 1 and comparative example 2, survey Test result such as table 4:
The clinker component list (%) of table 2.
The components in desulfurization gypsum table (%) of table 3.
Application result of the active superfine powder of table 4. in composite Portland cement
From the result of table 4,1-8 can be seen that incorporation active superfine powder, the composite Portland cement of preparation in conjunction with the embodiments Indices are controlled good, and intensity is higher, suitable as the strength of cement of admixture with flyash, and are slightly lifted;With only Compared, be improved largely with the strength of cement of Tungsten tailing.
2-4 data can be seen that Tungsten tailing in conjunction with the embodiments:Dolomitic lime stone=1:When 1, cement performance is best, tungsten tail Ore deposit:Dolomitic lime stone=1:2 and 1:When 4, intensity is declined slightly, but is influenceed little.
When 1 and 5-8 data can be seen that the content for significantly lifting active superfine powder in conjunction with the embodiments, it is super to mix activity For the amount of fine powder when not higher than 20%, strength of cement change is little, and when higher than 20%, stability is declined slightly.But influence Less.
Embodiment 9
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:82.80%;Ardealite:0.50%;Desulfurated plaster:2.70%;Lime stone:3.00%;High silica sand Rock:1.20%;Bottom slag:2.80%;Flyash:2.50%;Active superfine powder:4.50%;
The active superfine powder is the mixed powder that Tungsten tailing and dolomitic lime stone are mixed and is ground into.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 10%.
A kind of preparation method of Tungsten tailing common portland cement, comprises the following steps:
It is prepared by S1, active superfine powder
1) Tungsten tailing in outdoor drying or is dried to moisture in 11%;
2) it is milled after the Tungsten tailing after step 1) processing is well mixed with dolomitic lime stone, fineness controls 45 μm of square hole screens Sieve
Remaining 9%, moisture 2%, obtain active superfine powder;
It is prepared by S2, cement
Clinker, ardealite, bottom slag, desulfurated plaster, flyash, lime stone, high silica sand rock are added into grinding aid powder Mill, mill tail incorporation active superfine powder are well mixed, grinding control specific surface area >=350m2/Kg, finished cement is made.
Embodiment 10
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:82.80%;Ardealite:0.50%;Desulfurated plaster:2.70%;Lime stone:3.00%;High silica sand Rock:1.20%;Bottom slag:2.80%;Flyash:2.50%;Active superfine powder:4.50%;
The active superfine powder is the mixed powder that Tungsten tailing and dolomitic lime stone are mixed and is ground into.According to Tungsten tailing:It is high Magnesite lime stone=1:2 ratio prepares superfine powder, and 45 μm of fineness reach 10%.
Preparation method is the same as embodiment 9.
Embodiment 11
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:82.80%;Ardealite:0.50%;Desulfurated plaster:2.70%;Lime stone:3.00%;High silica sand Rock:1.20%;Bottom slag:2.80%;Flyash:2.50%;Active superfine powder:4.50%;
The active superfine powder is the mixed powder that Tungsten tailing and dolomitic lime stone are mixed and is ground into.According to Tungsten tailing:It is high Magnesite lime stone=1:4 ratio prepares superfine powder, and 45 μm of fineness reach 10%.
Preparation method is the same as embodiment 9.
Embodiment 12
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:82.80%;Ardealite:0.50%;Desulfurated plaster:2.70%;Lime stone:1.50%;High silica sand Rock:1.20%;Bottom slag:2.80%;Flyash:2.50%;Active superfine powder:6.00%;
The active superfine powder is the mixed powder that Tungsten tailing and dolomitic lime stone are mixed and is ground into.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 10%.
Preparation method is the same as embodiment 9.
Embodiment 13
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:82.80%;Ardealite:0.50%;Desulfurated plaster:2.70%;Lime stone:1.00%;High silica sand Rock:1.20%;Bottom slag:2.80%;Flyash:1.00%;Active superfine powder:8.00%;
The active superfine powder is the mixed powder that Tungsten tailing and dolomitic lime stone are mixed and is ground into.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 10%.
Preparation method is the same as embodiment 9.
Embodiment 14
A kind of Tungsten tailing common portland cement, is made up of the raw material of following percentage by weight:
Clinker:82.80%;Ardealite:0.50%;Desulfurated plaster:2.70%;Lime stone:1.00%;High silica sand Rock:1.20%;Bottom slag:0.80%;Flyash:1.00%;Active superfine powder:10.00%;
The active superfine powder is the mixed powder that Tungsten tailing and dolomitic lime stone are mixed and is ground into.According to Tungsten tailing:It is high Magnesite lime stone=1:1 ratio prepares superfine powder, and 45 μm of fineness reach 10%.
Preparation method is the same as embodiment 9.
Comparative example 3
A kind of portland cement, it is made up of the raw material of following percentage by weight:
Clinker:82.80%;Ardealite:0.50%;Desulfurated plaster:2.70%;Lime stone:3.00%;High silica sand Rock:1.20%;Bottom slag:2.80%;Flyash:6.00%.
Comparative example 4
A kind of portland cement, it is made up of the raw material of following percentage by weight:
Clinker:82.80%;Ardealite:0.50%;Desulfurated plaster:2.70%;Lime stone:3.00%;High silica sand Rock:1.20%;Bottom slag:2.80%;Tungsten tailing 6.00%.
Embodiment 9-14 and comparative example 4 are application of the active superfine powder in Portland cement (P.O42.5 cement), The chemical composition of used clinker such as table 5, gypsum component such as table 6, performance test, test knot is carried out respectively with comparative example 3 Fruit such as table 7:
The clinker composition quality table (%) of table 5.
The gypsum quality table (%) of table 6.
Application result of the active superfine powder of table 7. in Portland cement
From the result of table 7,9-14 can be seen that incorporation active superfine powder, the Portland cement of preparation in conjunction with the embodiments Indices are controlled good, and intensity is higher, slightly suitable as the cement of admixture with flyash, and are slightly lifted;With only Compared, be improved largely with the strength of cement of Tungsten tailing.
9-11 data can be seen that Tungsten tailing in conjunction with the embodiments:Dolomitic lime stone=1:When 1, cement performance is best, tungsten tail Ore deposit:Dolomitic lime stone=1:2 and 1:When 4, intensity is declined slightly, but is influenceed little.
When 9 and 12-14 data can be seen that the content for significantly lifting active superfine powder in conjunction with the embodiments, incorporation activity For the amount of superfine powder when not higher than 8%, strength of cement change is little, and when higher than 8%, stability can decline.
The equal change or modification change completed under technical spirit suggested by all present invention of described above, all should belong to It is the detailed description for being directed to the present invention preferably possible embodiments that the present invention, which is contained, but embodiment is not limited to the special of the present invention Sharp application range, lid the scope of the claims.

Claims (10)

1. a kind of Tungsten tailing common portland cement, it is characterised in that be made up of the raw material of following percentage by weight:
Clinker:53.00~85.00%;Ardealite:0~2.50%;Desulfurated plaster:1.50~7.50%;Lime stone: 1.00~15.00%;High silica sand rock:0~1.80%;Bottom slag:0.50~7.50%;Flyash:0~10.00%;Activity is super Fine powder:0.50~32.50%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.
2. Tungsten tailing common portland cement according to claim 1, it is characterised in that the cement is composition silicate During cement, it is made up of the raw material of following percentage by weight:Clinker:53.00~75.00%;Ardealite:0~2.50%;It is de- Sulphur gypsum:1.50~7.50%;Lime stone:1.00~15.00%;High silica sand rock:0~1.80%;Bottom slag:0.50~ 7.50%;Flyash:0~10.00%;Active superfine powder:5.00~30.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.
3. Tungsten tailing common portland cement according to claim 1, it is characterised in that the cement is normal silicate During cement, it is made up of the raw material of following percentage by weight:Clinker:80.00~85.00%;Ardealite:0~2.50%;It is de- Sulphur gypsum:1.50~7.50%;Lime stone:1.00~15.00%;High silica sand rock:0~1.80%;Bottom slag:0.50~ 7.50%;Flyash:0~10.00%;Active superfine powder:0.50~10.00%;
The active superfine powder be the mixing of Tungsten tailing and dolomitic lime stone and grinding into mixed powder.
4. according to the Tungsten tailing common portland cement described in claim 1 or 2 or 3, it is characterised in that the dolomitic lime stone For lime stone of the magnesia mass percent 3.5~12.6%.
5. according to the Tungsten tailing common portland cement described in claim 1 or 2 or 3, it is characterised in that the active superfine powder The ratio of middle Tungsten tailing and dolomitic lime stone is 1:4~1.
6. according to the Tungsten tailing common portland cement described in claim 1 or 2 or 3, it is characterised in that the active superfine powder Granularity is that 45 μm of square hole screens tail over≤11%.
7. according to the Tungsten tailing common portland cement described in claim 1 or 2 or 3, it is characterised in that the clinker Chemical composition is:SiO2For 15.60~22.80%, Al2O3For 3.50~5.80%, Fe2O3It is for 2.10~6.20%, CaO 60.00~68.50%, MgO are 2.50~4.50%, SO3For 0.10~1.00%.
8. according to the Tungsten tailing common portland cement described in claim 1 or 2 or 3, it is characterised in that the clinker 3 days Kang pressure Du≤30,28 day Kang pressure Du≤57;SO in the desulfurated plaster3>=40.0%, the crystallization water >=15.0%, outside Water≤15.0%, acid non-soluble substance≤3.0%.
9. the preparation method of the Tungsten tailing common portland cement according to claim 1 or 2 or 3, it is characterised in that including Following steps:
It is prepared by S1, active superfine powder
1) Tungsten tailing in outdoor drying or is dried to moisture less than 14%;
2) it is milled after the Tungsten tailing after step 1) processing is well mixed with dolomitic lime stone, fineness controls 45 μm of square hole screens to tail over ≤ 11%, moisture≤2%, obtain active superfine powder;
It is prepared by S2, cement
By clinker, ardealite, bottom slag, desulfurated plaster, flyash, lime stone, high silica sand rock, grinding aid grinding is added, Mill tail incorporation active superfine powder is well mixed to be made finished cement.
10. the preparation method of Tungsten tailing common portland cement according to claim 9, it is characterised in that in step S2, Grinding controls specific surface area >=350m2/Kg, finished cement is made.
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