CN101318782A - Method for preparing concrete and process thereof - Google Patents
Method for preparing concrete and process thereof Download PDFInfo
- Publication number
- CN101318782A CN101318782A CNA2008100316672A CN200810031667A CN101318782A CN 101318782 A CN101318782 A CN 101318782A CN A2008100316672 A CNA2008100316672 A CN A2008100316672A CN 200810031667 A CN200810031667 A CN 200810031667A CN 101318782 A CN101318782 A CN 101318782A
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- raw material
- tailings
- material powder
- shale
- silica
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/104—Ingredients added before or during the burning process
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method and a process for producing cement. The production method is to use tailings of lead-zinc ores as a raw material to replace limestone in the production of the cement. The production process comprises the following steps that: 1. according to weight percentage, 75 to 85 percent of the tailings of the lead-zinc ores, 10 to 20 percent of shale, 0.5 to 1.5 percent of pyrite residues and 1 to 10 percent of silica are weighed up; 2. the tailings of the lead-zinc ores and the pyrite residues in the step 1 are dried, and the shale and the silica are crushed; 3. the tailings of the lead-zinc ores, the pyrite residues, the shale and the silica obtained in the step 2 are ground to obtain raw material powder; 4. the raw material powder is subjected to homogenization; 5. the raw material powder obtained in the step 3 is subjected to air agitation to be even; 6. the raw material powder treated is put in a kiln to be calcinated to agglomerate materials; and 7. the raw material powder after homogenization is put in the kiln to be calcinated to the agglomerate materials by spraying coal in the kiln. The invention utilizes the tailings of the lead-zinc ores to replace the limestone, thereby radically solving the problems of storage of the tailings of the lead-zinc ores occupies land, eliminating the environmental pollution and simultaneously effectively reducing the exploitation of limestone resources.
Description
Technical field
The present invention relates to a kind of Cement Production method and technology thereof.
Background technology
The roughing of plumbous zinc ore, generally can only be in raw ore grinding floatingly select the plumbous zinc ore of 2-3%, and be mine tailings more than 90%, along with continually developing of plumbous zinc ore, plumbous zinc ore tailings is hoarded in a large number, the enterprise a large amount of soil of requisition of opening a mine is deposited, because the digestion process difficulty, this phenomenon has become huge environment hidden danger.Therefore how to handle plumbous zinc ore tailings, enterprise's problem demanding prompt solution has become to open a mine at present.
Summary of the invention
The object of the present invention is to provide a kind of Cement Production method and technology thereof, to solve the problem of plumbous zinc ore tailings digestion process difficulty.
Cement Production method provided by the invention is characterized in that with plumbous zinc ore tailings as a kind of raw material substitution Wingdale of producing cement.
The technology of production cement provided by the invention according to the method described above comprises the steps:
(1) joins raw material: get plumbous zinc ore tailings 75%-85%, shale 10%-20%, sulphur slag 0.5%-1.5%, silica 1-10% by weight;
(2) oven dry is broken: the described plumbous zinc ore tailings of step 1, sulfate slag are dried, and shale, silica carry out fragmentation;
(3) levigate: with plumbous zinc ore tailings, sulfate slag, the shale of the acquisition of step 2, silica is levigate obtains the raw material powder;
(4) raw material powder homogenizing: the raw material powder that step 3 is obtained carries out pneumatic blending to even;
(5) kiln-firing ripe material: the raw material powder after step 4 homogenizing is gone into kiln, and coal powder injection is fired into grog.
The problem of hoarding land occupation that the present invention utilizes plumbous zinc ore tailings replacing lime stone fundamentally to solve plumbous zinc ore tailings has been eliminated environmental pollution, can effectively reduce simultaneously exploitation to the limestone mine resource, save Mineral resources, reduce production costs, obtained good economic benefits and social benefit, especially vital role has been played in environmental protection.
In addition because the fineness of plumbous zinc ore tailings thin (80～100 order), greatly reduced mill feed size of the present invention, the contriver forges grating to the ball of raw mill and adjusts in trial-manufacturing process, reducing average ball diameter is Φ 55, filling ratio is 33～35%, and mill hourly output has increased 9.8T/h, has reduced power consumption, become system aspects in klining, because plumbous zinc ore tailings is rich in micro-metals, burn-ability is better, and the kiln temperature is even, the kiln feelings are stable easily to be grasped, clinker quality improves 3～4MPa, and grog easily grinds, and the platform that has improved cement grinding mill produces, the finished cement steady quality, every chemical index and physicals comply with the national standard requirements fully.
Embodiment
The method that the present invention produces cement is with a kind of raw material substitution Wingdale of plumbous zinc ore tailings as manufacture of cement, higher the inventor to the content that detects CaO in the plumbous zinc ore tailings in the studying for a long period of time of plumbous zinc ore tailings, what have can reach 52～54%, 49～52% the CaO content that is better than Wingdale, and oxious component content is few, be used as a kind of raw material substitution Wingdale of manufacture of cement with it, the problem that plumbous zinc ore tailings is hoarded in a large number can be thoroughly solved, the exploitation of Wingdale raw ore can be reduced simultaneously.Its three ratio of cement of producing with the inventive method is that saturation ratio KH, silicate ratio n, aluminium-oxygen modulus P can reach the requirement of cement industry batching fully, and can produce the high-quality grog.We can formulate the grog design according to the content difference of CaO in the plumbous zinc ore tailings in various places, determine plumbous zinc ore tailings shared weight ratio in raw material.
Below be that the concrete technology that adopts the plumbous zinc ore tailings in Huayuan to produce cement with the inventive method comprises the steps:
(1) raw material detects, and detected result sees Table 1;
(2) join raw material: adopt raw material shown in the table 1, get ore deposit tailings 75%-85%, shale 10%-20%, sulfate slag 0.5%-1.5%, silica 1-10% by weight;
(3) oven dry is broken: the described plumbous zinc ore tailings of step 1, sulfate slag are dried, and shale, silica carry out fragmentation;
(4) mix levigate: plumbous zinc ore tailings, sulfate slag, shale, the silica of the acquisition of step 2 are mixed the levigate raw material powder that obtains;
(5) raw material powder homogenizing: the raw material powder that step 3 is obtained carries out pneumatic blending to even;
(6) kiln-firing ripe material: the raw material powder after step 4 homogenizing is gone into kiln, and coal powder injection is fired into grog.
For the concrete proportioning of each raw material in the above-mentioned steps (2), can be in described scope value proportioning arbitrarily.
Below be concrete technology with the inventive method test manufacture cement:
(1) selects raw material and definite grog design: adopt raw material shown in the table 1, adopt grog scheme shown in the table 2;
(2) join raw material (seeing Table 3): adopt raw material shown in the table 1, get plumbous zinc ore tailings 80.54%, shale 14.77%, sulfate slag 1.06%, silica 3.63% by weight; These raw materials and bituminous coal and the mixing material that adds as required in grog are measured with platform scale;
(3) the various materials of step 2 metering are carried out central authorities and unite heap canopy, pile up separately;
(4) oven dry is broken: the described plumbous zinc ore tailings of step 2, sulfate slag, bituminous coal, mixing material are dried, shale, silica are carried out fragmentation;
(5) material after the step 4 oven dry fragmentation is entered the storehouse, garden respectively;
(6) mix levigate: carry out raw meal proportioning with microcomputer, plumbous zinc ore tailings, shale, sulfate slag, the silica of step 4 mixed levigate, the fineness value is the screen over-size of 0.080 μ m square hole sieve 5-6%, obtains the raw material powder, and it is gone into raw material silo;
(7) raw material powder homogenizing: the raw material powder in the raw material silo is entered raw material powder homogenizing storehouse, even with pneumatic blending;
(8) kiln-firing: the raw material powder that step 7 obtains is gone into the dry method kiln, and coal powder injection is fired into grog (the contained composition of grog sees Table 3);
(9) grog is discharged at the stockyard, enters storehouse, grog garden then;
(10) determine the proportioning of grog and mixing material according to the cement of different varieties and strength grade, and mix with Microcomputerized dosing;
(11) compound grinding to the fineness value with step 10 is the screen over-size of 0.080 μ m square hole sieve 0-2%, enters storehouse, cement garden then;
(12) cement in the storehouse, above-mentioned cement garden is entered the cement homogenizing storehouse and carry out homogenizing;
(13) pack, go into stockyard.
Each raw material ingredient sees Table 1 in the raw material that present embodiment adopts, and the grog design sees Table 2, and each material proportion and composition see Table 3.
Claims (3)
1, a kind of Cement Production method is characterized in that with plumbous zinc ore tailings as a kind of raw material substitution Wingdale of producing cement.
2, a kind of technology of producing cement by the described method of claim 1 is characterized in that comprising the steps:
(1) joins raw material: get plumbous zinc ore tailings 75%-85%, shale 10%-20%, sulfate slag 0.5%-1.5%, silica 1-10% by weight;
(2) oven dry is broken: the described plumbous zinc ore tailings of step 1, sulfate slag are dried, and shale, silica carry out fragmentation;
(3) levigate: with plumbous zinc ore tailings, sulfate slag, the shale of the acquisition of step 2, silica is levigate obtains the raw material powder;
(4) raw material powder homogenizing: the raw material powder that step 3 is obtained carries out pneumatic blending to even;
(5) kiln-firing ripe material: the raw material powder after step 4 homogenizing is gone into kiln, and coal powder injection is fired into grog.
3, technology according to claim 2 is characterized in that each raw material proportioning by weight is in the step (1): Pb-Zn tailings slag 80.54%, shale 14.77, sulfate slag 1.06%, silica 3.63%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100316672A CN101318782A (en) | 2008-07-04 | 2008-07-04 | Method for preparing concrete and process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100316672A CN101318782A (en) | 2008-07-04 | 2008-07-04 | Method for preparing concrete and process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101318782A true CN101318782A (en) | 2008-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100316672A Pending CN101318782A (en) | 2008-07-04 | 2008-07-04 | Method for preparing concrete and process thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN101318782A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446039A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method for improving machine hour production of cement grinding mill for producing P.O42.5 cement |
| CN104724956A (en) * | 2013-12-20 | 2015-06-24 | 南京中联水泥有限公司 | Production method of low-alkaline moderately-resistant sulfate silicate clinker |
| CN105236775A (en) * | 2015-09-18 | 2016-01-13 | 花垣县强桦矿业有限责任公司 | Method for producing active mixed material from manganese ore flotation tailings |
| CN105271847A (en) * | 2015-09-18 | 2016-01-27 | 花垣县强桦矿业有限责任公司 | Method for preparing cement clinker form lead-zinc ore and manganese ore flotation tailing as raw material |
-
2008
- 2008-07-04 CN CNA2008100316672A patent/CN101318782A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104724956A (en) * | 2013-12-20 | 2015-06-24 | 南京中联水泥有限公司 | Production method of low-alkaline moderately-resistant sulfate silicate clinker |
| CN104446039A (en) * | 2014-11-25 | 2015-03-25 | 广西鱼峰水泥股份有限公司 | Method for improving machine hour production of cement grinding mill for producing P.O42.5 cement |
| CN105236775A (en) * | 2015-09-18 | 2016-01-13 | 花垣县强桦矿业有限责任公司 | Method for producing active mixed material from manganese ore flotation tailings |
| CN105271847A (en) * | 2015-09-18 | 2016-01-27 | 花垣县强桦矿业有限责任公司 | Method for preparing cement clinker form lead-zinc ore and manganese ore flotation tailing as raw material |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Open date: 20081210 |