CN104496220A - Method for improving doping amount of mining ore-dressing detrital mullock in cement - Google Patents

Method for improving doping amount of mining ore-dressing detrital mullock in cement Download PDF

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Publication number
CN104496220A
CN104496220A CN201410690904.1A CN201410690904A CN104496220A CN 104496220 A CN104496220 A CN 104496220A CN 201410690904 A CN201410690904 A CN 201410690904A CN 104496220 A CN104496220 A CN 104496220A
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China
Prior art keywords
parts
mining
cement
barren rock
wingdale
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CN201410690904.1A
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Chinese (zh)
Inventor
邓玉莲
杨茂鑫
钟靖华
廖卫军
何恵
张国霞
陈柳军
刘丽君
胡中文
李国利
黄少琴
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Guangxi Yufeng Cement Co Ltd
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Guangxi Yufeng Cement Co Ltd
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Priority to CN201410690904.1A priority Critical patent/CN104496220A/en
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

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Abstract

A disclosed method for improving doping amount of mining ore-dressing detrital mullock in cement comprises: proportioning mining ore-dressing detrital mullock and limestone according to the following weight proportions: 83.1 parts of limestone, 15.8 parts of sandstone, 3.2 parts of iron powder, and 104 parts of a rough material, wherein the mining ore-dressing detrital mullock comprises sandstone, iron powder and the rough material; and mixing the ore-dressing detrital mullock with limestone with stirring in a mining section according to the ratio by utilizing a blender or a loading machine, and then sending to a grinding machine for preparing cement. The method for improving the doping amount of mining ore-dressing detrital mullock in cement overcomes the disadvantages that in the prior art, cement is instable in quality, high in cost, bad in economic benefit and the like, and realizes the advantages of stable cement quality, low cost and good economic benefit.

Description

The raising technique of a kind of mining and mill run chip barren rock incorporation in cement
Technical field
The present invention relates to cement processing technique field, particularly, relate to the raising technique of a kind of mining and mill run chip barren rock incorporation in cement.
Background technology
Containing a large amount of interlayer mining and mill run chip barren rock in limestone mine, main component SiO 2, AI 2o 3, Fe 2o 3, CaO, MgO, wherein Cao content is low, content of MgO exceeds standard, mining and mill run chip barren rock Cao≤45%, MgO>=3.5%, close to producing cement material composition, but can not directly use as cement raw material, Wingdale CaO>=50.0% in companies ask batching, the scope of MgO≤1.2%, when 2012 mining and mill run chip barren rock incorporations are 5%, do not meet technical requirements, by recovery scheme of arranging in pairs or groups to mining chip barren rock, through experimental study, when showing that mining and mill run chip barren rock maximum doping quantity is 10%, use as front mixing compound, through being optimized adjustment to technique proportion scheme technically, carry out stable Wingdale quality, reach stable raw material LSF, SM, IM tri-rate values, ensure LSF and the clinker strength of grog, ensure the stable of cement quality.Through the comprehensive utilization of resources to exploitation mining and mill run chip barren rock, produce P.C32.5 cement, realize certain economic benefit.
Mining and mill run chip barren rock incorporation 5% in P.C32.5 cement, can not meet Production requirement.
Wingdale is one of main raw material producing cement clinker, and calcareous raw material accounts for about 80% of material rate.We mainly consider the content of Wingdale Cao, Mgo aborning, and because in Wingdale mining and mill run chip barren rock, Cao content is low, content of MgO exceeds standard, and can not directly use as cement raw material.
Realizing in process of the present invention, contriver finds at least to exist in prior art the defects such as the high and deficiency in economic performance of cement quality instability, cost.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose the raising technique of a kind of mining and mill run chip barren rock incorporation in cement, stablize to realize cement quality, advantage that cost is low and good in economic efficiency.
For achieving the above object, the technical solution used in the present invention is: the raising technique of a kind of mining and mill run chip barren rock incorporation in cement, comprising:
(1) mining and mill run chip barren rock and Wingdale are arranged in pairs or groups by following parts by weight, this mining and mill run chip barren rock comprises sandstone, iron powder and raw material:
Wingdale: 83.1 parts;
Sandstone: 15.8 parts;
Iron powder: 3.2 parts;
Raw material: 104 parts;
(2) in proportion, mining and mill run chip barren rock and Wingdale utilized hook machine or fill sanction machine after mining area carries out mix and blend, then sending into grinding machine and prepare cement.
Further, in described Wingdale, the parts by weight of each composition are as follows:
SiO 2: 1.24 parts;
AlO 2: 0.27 part;
Fe 2o 3: 0.32 part;
CaO:52.47 part;
MgO:1.13 part.
Further, in described sandstone, the parts by weight of each composition are as follows:
SiO 2: 72.38 parts;
AlO 2: 12.49 parts;
Fe 2o 3: 4.15 parts;
CaO:0.59 part;
MgO:1.47 part.
Further, in described iron powder, the parts by weight of each composition are as follows:
SiO 2: 23.06 parts;
AlO 2: 4.85 parts;
Fe 2o 3: 34.74 parts;
CaO:23.91 part;
MgO:4.13 part.
Further, in described raw material, the parts by weight of each composition are as follows:
SiO 2: 13.19 parts;
AlO 2: 2.26 parts;
Fe 2o 3: 2.10 parts;
CaO:45.39 part;
MgO:0.90 part.
The raising technique of mining and mill run chip barren rock incorporation in cement of various embodiments of the present invention, owing to comprising: mining and mill run chip barren rock and Wingdale are arranged in pairs or groups by following parts by weight, this mining and mill run chip barren rock comprises sandstone, iron powder and raw material: Wingdale: 83.1 parts; Sandstone: 15.8 parts; Iron powder: 3.2 parts; Raw material: 104 parts; In proportion, mining and mill run chip barren rock and Wingdale utilized hook machine or fill sanction machine after mining area carries out mix and blend, then sending into grinding machine and prepare cement; Thus can overcome that cement quality in prior art is unstable, cost is high and the defect of deficiency in economic performance, to stablize to realize cement quality, advantage that cost is low and good in economic efficiency.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification sheets, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is medial error analysis chart of the present invention;
Fig. 2 is each line clinker quality situation contrast refraction diagram in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, as depicted in figs. 1 and 2, provide the raising technique of a kind of mining and mill run chip barren rock incorporation in cement, comprising:
(1) mining and mill run chip barren rock and Wingdale are arranged in pairs or groups by following parts by weight, this mining and mill run chip barren rock comprises sandstone, iron powder and raw material:
Wingdale: 83.1 parts;
Sandstone: 15.8 parts;
Iron powder: 3.2 parts;
Raw material: 104 parts;
(2) in proportion, mining and mill run chip barren rock and Wingdale utilized hook machine or fill sanction machine after mining area carries out mix and blend, then sending into grinding machine and prepare cement.
In the above-described embodiments, step (1) in Wingdale the parts by weight of each composition as follows:
SiO 2: 1.24 parts;
AlO 2: 0.27 part;
Fe 2o 3: 0.32 part;
CaO:52.47 part;
MgO:1.13 part.
In the above-described embodiments, step (1) in sandstone the parts by weight of each composition as follows:
SiO 2: 72.38 parts;
AlO 2: 12.49 parts;
Fe 2o 3: 4.15 parts;
CaO:0.59 part;
MgO:1.47 part.
In the above-described embodiments, step (1) in iron powder the parts by weight of each composition as follows:
SiO 2: 23.06 parts;
AlO 2: 4.85 parts;
Fe 2o 3: 34.74 parts;
CaO:23.91 part;
MgO:4.13 part.
In the above-described embodiments, step (1) in raw material the parts by weight of each composition as follows:
SiO 2: 13.19 parts;
AlO 2: 2.26 parts;
Fe 2o 3: 2.10 parts;
CaO:45.39 part;
MgO:0.90 part.
The object of technical solution of the present invention is, mining and mill run chip barren rock is at incorporation >=10% of P.C32.5 cement, and the LSF of guarantee raw material, grog meets technical requirements.Adopt mining and mill run chip barren rock collocation recovery scheme, mine is rationally mixed and joins, comprehensively prepare burden.
being described in detail as follows of technical solution of the present invention:
3.1, the normal Wingdale quality condition in mine: get exploration sample by mine supt each production platform to mine and carry out assay, according to analysis data, quality collocation is carried out to ore, see the following form:
Wingdale composition SiO 2 AlO 2 Fe 2O 3 CaO MgO
5# shovels 0.97 0.33 0.16 52.42 0.14
6# shovels 0.44 0.13 0.56 53.37 1.25
7# shovels 0.03 0.15 0.11 54.37 0.85
8# shovels 0.45 0.20 0.45 53.45 0.64
On average 0.47 0.20 0.32 53.40 0.72
From upper table, see that mine Wingdale quality condition is relatively better, composition is also relatively stable.The Wingdale Mao content that 6# shovels position is higher, but through quality collocation, mean number is still within the scope of company's examination.
3.2, Wingdale mining and mill run chip barren rock quality condition is as following table:
Wingdale composition SiO 2 AlO 2 Fe 2O 3 CaO MgO
Sample 1 8.60 1.07 0.28 45.06 4.20
Sample 2 7.89 0.95 0.18 43.86 0.98
Sample 3 6.98 0.59 0.35 42.96 6.19
Sample 4 9.15 0.79 0.46 44.68 4.59
On average 8.16 0.85 0.32 44.14 3.99
In Wingdale mining and mill run chip barren rock, Cao content is low, and content of MgO exceeds standard, and Cao content is low directly affects raw material LSF, thus has influence on LSF and the clinker strength thereof of grog.Certain content of MgO can reduce the temperature that liquid phase generates, and be conducive to calcining to a certain extent, but content of MgO is too high, and the MgO in grog just with the generation of the form of periclasite crystal, thus causes firing temperature to narrow, and kilneye ring formation, ties a series of situations such as large ball.And after grog wears into cement, the periclasite crystal hydration swelling of the grog problem such as cause soundness of cement bad.
3.3, when we mix aborning or do not mix mining and mill run (chip), the condition of production is as following table:
As shown above, raw ingredients CaO53.4%, MgO0.7% when not mixing mining and mill run chip barren rock, mix mining and mill run chip barren rock 5%, CaO55.3%, MgO0.37% is Cao >=50%, Mgo≤1.2% at Con trolling index, when 100% mixes mining and mill run chip barren rock material, CaO44.14%, MgO4.99%, does not meet dispensing requirements, very large on raw material LSF, grog LSF impact yet.
the target value of technical solution of the present invention is:when raising mining and mill run chip barren rock maximum doping quantity is 10.0%, reaches stable raw material LSF, SM, IM tri-rate values, ensure LSF and the clinker strength of grog.
the feasibility analysis of technical solution of the present invention:the 3# line grog situation of 2012 is added up, wherein the grog LSF qualification rate in February, March, May, June, August, September reaches more than 96%, these month grog LSF qualification rate is so high is because there is the concern of leader, this illustrates that we pass through effort, Strengthening the leading manages, in comprehensive utilization of resources, produce P.C32.5 cement, the incorporation improving mining and mill run chip barren rock is feasible, as long as do a little adjustment on proportion scheme.Refer to following table:
January February March April May June
94.6％ 96.5％ 100％ 95.7％ 100％ 96.7％
July August September October November December
93.3％ 100％ 96.6％ 95.5％ 94.8％ 95.0％
Processing requirement: mining and mill run chip barren rock maximum doping quantity is 10%, in order to better stablize Wingdale quality condition, being strict with mine and arranging in pairs or groups in proportion blanking, reducing various places MgO peak value by pre-homogenization yard homogenizing.And the personnel of sampling strengthen sample representation, real time sample data suitably regulate blend proportion simultaneously.
Collocation employs Wingdale side slope material (chip), the SiO of the Wingdale that raw material grinding mill uses 2and AlO 2content compared with normal material improve bad, all have considerable influence to the composition of raw material and rate value etc., in order to stable raw ingredients, ensure that kiln calcining is normal, suitably must regulate proportion scheme.
The first wife of technical solution of the present invention expects that computation schemes sees the following form:
Name of material Ratio SiO 2 AlO 2 Fe 2O 3 CaO MgO LSF
Wingdale 80.3 1.24 0.27 0.32 52.47 1.13
Sandstone 15.4 72.38 12.49 4.15 0.59 1.47
Iron powder 4.3 23.06 4.85 34.74 23.91 4.13
Raw material 100 13.09 2.26 2.21 44.27 1.15 108.6
Index request 100 12.50 2.60 2.10 45.39 0.90 115.0
Calculate from upper table data and find out that raw material LSF is 108.6, Al 2o 3be 2.26%, Fe 2o 3be 2.21%.Equal range index requires LSF to be 115, Al 2o 3be 2.60%, Fe 2o 3be 2.10% comparatively far away, in order to better use Wingdale side slope material (chip), suitably should reduce the materials ratio of sandstone and iron powder, carrying out stable raw ingredients.
The technical management standard requirement of company, mining and mill run chip barren rock index Cao≤45%, MgO >=3.5%.On January 5th, 2013, sample to limestone mine in 120# platform 6# shovel position mining chip, waste mining rock region, get three sample surveys in same platform mining area, result is as follows:
Wingdale composition SiO 2 AlO 2 Fe 2O 3 CaO MgO
1 0.44 0.33 0.16 44.42 1.28
2 6.97 3.13 0.56 42.37 8.55
3 0.03 0.15 0.11 54.37 0.95
On average 2.48 1.20 0.28 47.05 3.59
Same platform three grade Wingdale sample Cao.Mgo mean numbers are respectively: 47.05%.3.59%, mining chip barren rock index Cao≤45%, MgO >=3.5%, wherein the 1st, 3 samples are just undesirable, if can not steadily produce, be descended one of them grade, or uneven blanking, so just by may not reaching Con trolling index requirement, because mining and mill run chip barren rock can not be used by direct production of cement aborning, therefore a small amount of collocation is wanted to use, if composition is unstable is very large on batching impact, our cement quality also can not get ensureing.
We to 2 months enter storehouse Wingdale and 2# line, the sampling of 3#, 4# line windrow stone transporting lime stone compares Comparative Survey, error requirements≤1.0%, see Fig. 1.
By in upper table and Fig. 1, we can see using into storehouse Wingdale and in fact windrow Wingdale and differ very large, the representativeness of this interpret sample is very important, because the data that it provides are foundations of production control quality, sample representativeness is incorrect, will mislead production, therefore lead and also take much count of, the technological standard of company has formulated rigorous sampling method, each employee will perform on request, and rewarding and punishing are examined.
To division be carried out during each sample preparation, cleaning mill, and carry out washing mill with the sample that will grind.Sample preparation personnel fetch to watchman the sample come and carry out fragmentation, and then division is dried, then carries out grinding, all will do by regulation, as found not according to regulation, then to carry out button and penalize, therefore, do not exist and cause batch mixing.Carry out sample stirring all on request before check analysis personnel check, check and undertaken by quality portion working specification, as found to carry out not according to working specification, department has check-up system to carry out rewarding and punishing.
1, multiple spot collocation uses, reduces MgO peak value.
The MgO of Wingdale mining and mill run chip barren rock is very high, reaches 5.0%, and the MgO that eliminate wherein is impossible, and only having is arranged in pairs or groups by multiple spot reduces the peak value of Wingdale MgO, stablizes Wingdale blanking quality.
2, suitably proportion scheme is adjusted, stably manufactured quality.
In order to better use Wingdale side slope material (chip), suitably should reduce the materials ratio of sandstone and iron powder, carrying out stable raw ingredients is that the Wingdale adapting to collocation side slope material is produced, suitable adjustment materials ratio, the materials ratio of according to the form below carries out production adjustment, thus makes raw ingredients in index request span of control:
Name of material Ratio SiO 2 AlO 2 Fe 2O 3 CaO MgO LSF
Wingdale 81.1 1.24 0.27 0.32 52.47 1.13
Sandstone 14.8 72.38 12.49 4.15 0.59 1.47
Iron powder 4.1 23.06 4.85 34.74 23.91 4.13
Raw material 100 12.48 2.58 2.12 45.40 1.14 115.3
Index request 100 12.50 2.60 2.10 45.39 0.90 115.0
In order to solve the large reason of quality fluctuation, mine portion adopts hook machine or shovel loader in advance the Wingdale in this exploiting field to be mixed with mining and mill run chip barren rock, and then entrucking is produced into storehouse.Within 2013, from January to June, enter storehouse Wingdale Cao.Mgo qualification rate situation as follows:
It can be seen from the table, enter storehouse Wingdale Cao.Mgo qualification rate average out to over the past half year: 87.5%, Con trolling index is that collocation mining chip, barren rock enter storehouse Wingdale Cao.Mgo qualification rate 85%, reaches the effect that school is good.
The confirmation of the target value of technical solution of the present invention: adjustment proportion scheme, when using mining and mill run chip barren rock maximum doping quantity to be 10%, working condition can also be met, ensure into storehouse Wingdale Cao.Mgo qualification rate 85%, not only ensure the intensity of grog and the quality of cement, also improve grog LSF qualification rate, who knows that quality have also been obtained further raising at each line in 2013.See the following form:
Do lot of experiments, arranged in pairs or groups by a certain percentage by Wingdale mining and mill run chip barren rock and normal Wingdale and use, the materials ratio of adjustment proportion scheme, is finally able to optimum proportion scheme and carrys out stable raw ingredients, reduce material fluctuation, improve grog three ratio qualification rate.The use of Wingdale mining and mill run chip barren rock reduces production cost, and has great importance to the working life in mine and the overall quality of environment.
Have passed PDCA circulation this time, Wingdale mining and mill run chip barren rock and normal Wingdale are arranged in pairs or groups by a certain percentage and uses, the materials ratio of adjustment proportion scheme, finally being able to optimum proportion scheme is incorporation 10%, can meet production requirement, each line clinker discharging quality also increases, but, very large as the Wingdale variation of quality of producing cement clinker main raw material, still govern the stability of raw meal proportioning to a great extent.Therefore, in order to ensure our current movable achievement, we also will strengthen the dynamics of management on the one hand at this, product price competitiveness is commercially dominant matter, therefore, the comprehensive utilization of resources work of company optimumly can be carried out, obtain the good result of the economic benefit of company and the social benefit doulbe-sides' victory of energy-saving and emission-reduction consumption reduction.
In the middle of next step plan; can also incorporation can be how many in the middle of production by mining and mill run chip barren rock; guarantee reaches stable raw material LSF, SM, IM tri-rate values; ensure LSF and the clinker strength of grog; through the comprehensive utilization of resources to the mining and mill run chip barren rock produced during exploitation; significantly reduce the waste discharge waste in limestone mine, be the consumption that economizes on resources, protection of the environment makes actively far-reaching contribution to society.When the maximum incorporation of raising mining and mill run chip barren rock is 10%, reach stable raw material LSF, SM, IM tri-rate values, ensure LSF and the clinker strength of grog.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1. a raising technique for mining and mill run chip barren rock incorporation in cement, is characterized in that, comprising:
(1) mining and mill run chip barren rock and Wingdale are arranged in pairs or groups by following parts by weight, this mining and mill run chip barren rock comprises sandstone, iron powder and raw material:
Wingdale: 83.1 parts;
Sandstone: 15.8 parts;
Iron powder: 3.2 parts;
Raw material: 104 parts;
(2) in proportion, mining and mill run chip barren rock and Wingdale utilized hook machine or fill sanction machine after mining area carries out mix and blend, then sending into grinding machine and prepare cement.
2. the raising technique of mining and mill run chip barren rock according to claim 1 incorporation in cement, it is characterized in that, in described Wingdale, the parts by weight of each composition are as follows:
SiO 2: 1.24 parts;
AlO 2: 0.27 part;
Fe 2o 3: 0.32 part;
CaO:52.47 part;
MgO:1.13 part.
3. the raising technique of mining and mill run chip barren rock according to claim 1 incorporation in cement, it is characterized in that, in described sandstone, the parts by weight of each composition are as follows:
SiO 2: 72.38 parts;
AlO 2: 12.49 parts;
Fe 2o 3: 4.15 parts;
CaO:0.59 part;
MgO:1.47 part.
4. the raising technique of mining and mill run chip barren rock according to claim 1 incorporation in cement, it is characterized in that, in described iron powder, the parts by weight of each composition are as follows:
SiO 2: 23.06 parts;
AlO 2: 4.85 parts;
Fe 2o 3: 34.74 parts;
CaO:23.91 part;
MgO:4.13 part.
5. the raising technique of mining and mill run chip barren rock according to claim 1 incorporation in cement, it is characterized in that, in described raw material, the parts by weight of each composition are as follows:
SiO 2: 13.19 parts;
AlO 2: 2.26 parts;
Fe 2o 3: 2.10 parts;
CaO:45.39 part;
MgO:0.90 part.
CN201410690904.1A 2014-11-25 2014-11-25 Method for improving doping amount of mining ore-dressing detrital mullock in cement Pending CN104496220A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1098389A (en) * 1993-08-02 1995-02-08 山东省黄金学会 Use the gold ore tailing making portland cement
CN102730992A (en) * 2012-06-29 2012-10-17 酒钢(集团)宏达建材有限责任公司 Method for producing low-alkali Portland cement by using industrial solid waste
CN103373826A (en) * 2012-04-19 2013-10-30 北京建筑材料科学研究总院有限公司 Method for preparing low-carbon cement clinker by utilizing iron tailings
CN103524059A (en) * 2013-10-07 2014-01-22 桂林理工大学 Method for preparing low energy consumption cement with tin ore tailings as raw materials for resource utilization

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1098389A (en) * 1993-08-02 1995-02-08 山东省黄金学会 Use the gold ore tailing making portland cement
CN103373826A (en) * 2012-04-19 2013-10-30 北京建筑材料科学研究总院有限公司 Method for preparing low-carbon cement clinker by utilizing iron tailings
CN102730992A (en) * 2012-06-29 2012-10-17 酒钢(集团)宏达建材有限责任公司 Method for producing low-alkali Portland cement by using industrial solid waste
CN103524059A (en) * 2013-10-07 2014-01-22 桂林理工大学 Method for preparing low energy consumption cement with tin ore tailings as raw materials for resource utilization

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
钱觉时: "《建筑材料学》", 31 March 2007, article "硅酸盐水泥", pages: 69 - 4.1 *

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