CN101519282A - Novel technology of vertical kiln for manufacturing cement clinker by utilizing dry acetylene sludge two-stage batching - Google Patents
Novel technology of vertical kiln for manufacturing cement clinker by utilizing dry acetylene sludge two-stage batching Download PDFInfo
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- CN101519282A CN101519282A CN200810030708A CN200810030708A CN101519282A CN 101519282 A CN101519282 A CN 101519282A CN 200810030708 A CN200810030708 A CN 200810030708A CN 200810030708 A CN200810030708 A CN 200810030708A CN 101519282 A CN101519282 A CN 101519282A
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- raw material
- carbide slag
- cement clinker
- drying acetylene
- shaft kiln
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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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- 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
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
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Abstract
The invention discloses a novel technology of a vertical kiln for manufacturing cement clinker by utilizing dry acetylene sludge two-stage batching, which comprises the steps of utilizing dry acetylene sludge to substitute limestone in cement raw meal batching fully or partially, taking the dry acetylene sludge as the main material of the cement raw meal to be subjected to second-stage batching directly with other materials after first-stage batching grinding, mixing evenly, manufacturing a raw meal rod or a raw meal ball, entering the vertical kiln and forming the cement clinker by calcining. The invention has less investment and low energy consumption, takes effect rapidly, is easy for achieving environment protection standard, saves resources of coal, electricity and limestone and reduces CO2 discharge, thus being a novel energy-saving, consumption-reducing and environment-protecting technology.
Description
Technical field
The present invention relates to a kind of material of construction; being specifically related to a kind of shaft kiln and utilizing the drying acetylene carbide mud residue ingredient to produce the novel process of cement clinker, is that a kind of chlorine industry waste residue is handled and the novel process of Cement industry aspect comprehensive utilization of resources, save energy and protection environment
Background technology
Carbide slag is the Coal Chemical Industry industry is produced resins such as PVC, PVA with acetylene method a industrial residue, all adopted wet method acetylene technology in the past, carbide slag slurries is moisture to be reached more than 90%, the utilization of carbide slag must be earlier through filter-press dehydration, along with development of technology and water saving, requirements of saving energy, drying acetylene water saving technology begins to apply, and the drying acetylene carbide slag mostly is powdery, water content 4～10% greatly.The scale of carbide slag is utilized as the production cement clinker, utilizes the technology of drying acetylene carbide slag system cement to be novel dry-process rotary kiln technology both at home and abroad at present.
Adopt novel dry-process rotary kiln technology utilization drying acetylene carbide slag to produce cement, earlier with carbide slag after other raw materials are prepared burden, use the strong vertical mill of drying capacity to dry grinding to cooperating raw material, the raw material powder water content of grinding requires＜1.5%, and grog burns till hear rate can reduce to 3100～3360kJ/kg; But the problem of novel dry-process rotary kiln technology utilization carbide slag maximum is to be difficult to guarantee to produce operation continuously, must control carbide slag consumption in the production below 15%, promptly control in the flue gas water content and be no more than certain limit value and could guarantee to produce normal continuous the operation.This is owing to Ca (OH) in the carbide slag
2Decomposition temperature about 580 ℃, the Ca in the carbide slag (OH)
2With the CaCO in the Wingdale
3Degradation production is respectively water and CO
2Difference is big, and whirlwind tube and the decomposing furnace tapering higher in temperature easily produce obstruction, and causing can not continuous and stable production.The effective way that solves is that above or preroasting is decomposed into unslaked lime with carbide slag carbonization to 85% earlier, but very uneconomical.On the other hand, some method acetylene technology utilizations useless chlorine bleach liquor, then alkali content in the carbide slag and cl content are too high, can cause serious skinning, hang knurl and stop up, novel dry-process rotary kiln is difficult to normal operation.
Inquire about domestic and international data of literatures, it is the novel dry-process rotary kiln production technique that present state-of-the-art carbide slag is produced cement clinker technology, though it is lower that grog burns till hear rate, but the carbide slag consumption is being difficult to guarantee to produce the continous-stable operation more than 15%, still there is not at present economic terms of settlement, invest in addition excessive, difficult general promotion and implementation.Press for that a kind of technology is simple, less, the reliable power-saving technology novel process of technology of investment, China's policy is that the Application and Development of shaft kiln novel technique is laid a good foundation eliminating when falling behind shaft kiln to the encouragement of the energy saving and environment friendly machine shaft kiln of advanced person.
Summary of the invention
Technical problem to be solved by this invention is: solve the problem that above-mentioned prior art exists, and provide that a kind of technology is simple, less investment, instant effect, be easy to environment protection standard, can save a large amount of coal consumptions and power consumption, saving limestone resource, reduce CO
2The shaft kiln of discharging utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker.
The technical solution used in the present invention is: adopt the Wingdale in all or part of replacement cement raw mix proportioning of drying acetylene carbide slag, with the main raw material of drying acetylene carbide slag as raw material, direct and other raw materials through a gradating material grinding carry out B grade mixture material again, mix homogeneous, make raw material rod or raw material ball, send into the shaft kiln calcination ripe material.
In the technique scheme, the drying acetylene carbide slag is meant the carbide slag that chemical enterprise adopts drying acetylene technology to produce, and main component is Ca (OH)
2, water content is 2～16%.
Above-mentioned " with the main raw material of drying acetylene carbide slag; direct and other raw materials through a gradating material grinding carry out B grade mixture material again; mix " as raw material, it is characterized in that: adopt water content directly to carry out B grade mixture material as main raw material raw material without grinding, saved a large amount of oven dry and raw grinding amount at the drying acetylene carbide slag of 2 ∽ 16%.
Above-mentioned " with the main raw material of drying acetylene carbide slag as raw material; direct and other raw materials through a gradating material grinding carry out B grade mixture material again; mix " is characterized in that: adopted one or more levels mixing, homogenizer, can add moisture content for satisfying the requirement of moulding moisture content.One-level is mixed homogeneous and is referred to adopt a biaxial rneader or cored screw stirrer or wheel rolling formula mixing machine or connect disc type mill or other mechanical forced formula stirrer mixing homogeneous, an amount of simultaneously moulding requirement moisture content that replenishes; Multistage mixing homogeneous refers to adopt an above biaxial rneader or cored screw stirrer or wheel rolling formula mixing machine or the series connection disc type is ground or other forced action type mixing and blending machine devices in series combination mixes homogeneous, an amount of simultaneously moulding requirement moisture content that replenishes.
Above-mentioned " making raw material rod or raw material ball " is characterized in that: use all kinds of roller single-lead-screw extruding briquetting machines or all kinds of extrusion shaping machine to be shaped to solid charge bar or hollow charge bar: or utilize pan-pelletizer, the moulding of relative rolling type shaper.
This shaft kiln utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker, described raw meal proportioning is a two-stage batching: be basic raw material with the carbide slag, the siliceous raw material that need are additional, correction material, coal-fired and necessary mineralising sintering agent is made accurate raw material powder A through a gradating material grinding, or with siliceous raw material, correction material, coal-fired and necessary mineralising sintering agent and part Wingdale are made accurate raw material powder B through a gradating material, then A powder or B powder and carbide slag are carried out B grade mixture material in proportion, again through mixing, regulate moulding moisture content, raw material rod or raw material ball are made in moulding, enter the shaft kiln calcination ripe material.
In the technique scheme, described siliceous raw material refers to contain the higher clay of silicon-dioxide, shale, flyash, slag, spoil and other inorganic minerals and industrial residue; Correction material comprises siliceous correction material, ferro-controlling raw material, aluminium matter correction material, refers to for adjusting suitable raw material CaO, SiO
2, Al
2O
3, Fe
2O
3The correction material that chemical constitution is added is as silicon sand, iron ore, sulfate slag, plumbous cadmia, high-al clay etc.; The mineralising sintering agent refers to burn till and stablize for improving clinker mineral, reduce all kinds of mineralizers burn till coal consumption and to add, crystal seed, sintering agent, coal saving powder etc., be a kind of in the muriate, fluorochemical, vitriol, nitrate, silicofluoride, permanganate, oxymuriate, perchlorate, dichromate, phosphoric acid salt and the organic acid salt that contain potassium, sodium, calcium, magnesium, aluminium, iron, copper, manganese, barium, lithium, strontium, caesium and rare earth element and grog, industrial residue, the mine tailing or several, mineralising sintering agent consumption is that 2/10000ths to 10 of raw material amount does not wait.
In the technique scheme, each component percentages of raw material two-stage batching is different with technical analysis widely different according to the chemical analysis of the raw materials and fuel of getting, adopt the rational three ratio scope of control raw material to be according to the raw materials and fuel condition: saturation ratio (KH) 0.82～1.08, silicon rate (N) 1.3～3.2, aluminium rate (P) 0.9～3.5.
The present invention has following remarkable advantage
1. less investment, instant effect, and be easy to environment protection standard.
2. can save a large amount of raw grinding power consumptions.
3. grog burns till hear rate and novel dry-process rotary kiln technology quite or lower.
4. effects of energy saving and emission reduction is remarkable, and grog per ton can consume about 0.9 ton of butt carbide slag, reduces discharging CO
2About 0.56 ton.
5. cement kiln output can improve 30～50%, and the comprehensive power consumption of ton manufacture of cement significantly reduces.
Description of drawings
Fig. 1 is a process flow sheet of the present invention
Embodiment
Technical essential:
With the drying acetylene carbide slag as the raw material main raw material, look local raw materials and fuel situation and choose suitable supplemental components.
2. adopt two-stage batching will go into the preparation of kiln raw material and be divided into two big components to prepare remix even, a big component is for need additional raw materials and fuel, and second component is a carbide slag, has made full use of the characteristic of drying acetylene carbide slag, has saved a large amount of raw grinding amounts.
3. adopt one or more levels to mix homogeneous and adjust moulding moisture content, reach that raw material mix, each component materials contact is good, for the chemical reaction of calcination process creates conditions.
Embodiment one:
Certain factory's shaft kiln trial production line utilizes the carbide slag of drying acetylene technology discharging to replace whole Wingdales, and carbide slag moisture content fluctuates 4～10%, carbide slag butt CaO content average 68.30%.The raw material raw material adopts flyash, silicon manganese slag, Pb-Zn tailings, hard coal and carbide slag in the trial production.Accurate raw material powder adopts flyash, silicon manganese slag, Pb-Zn tailings and hard coal to carry out a gradating material, and through Φ 2.2 * 7.5m band powder separating machine raw mill grinding, fineness 80 μ m tail over 11.5%.The carbide slag of accurate raw material powder and process deironing foreign material enters the biaxial rneader pre-mixing after B grade mixture material is carried out in metering, be discharged into planetary rolling mixing machine then and add the mixing of an amount of moulding water-powered roller pressure, mix homogeneous material and send into the solid charge bar that the roller single-lead-screw extruding briquetting machine is shaped to Φ 12mm, the bar of moulding is sent into the shaft kiln calcination ripe material through belt.
In the trial production, 3 days average ultimate compression strength 28.3MPa of grog, 28 days average ultimate compression strength 59.3Mpa, fCaO2.3%, it is stable that grog goes out mill, and grog is joined hot 2712kJ/kg (649Kcal/Kg), and shaft kiln output improves 51.3%.
Embodiment two:
Certain shaft kiln factory utilizes the carbide slag of drying acetylene technology discharging to replace about 75% Wingdale, utilizes the white filter mud of waste residue in paper mill to replace about 25% Wingdale, utilizes the black filter mud in paper mill simultaneously.Carbide slag moisture content fluctuation 4～11%, about 46%, the black filter mud water content about 73% of white filter mud moisture content.The raw material raw material adopts flyash, manganese slag, silicon sand, hard coal and coke fines and carbide slag, white filter mud, deceives filter mud in the trial production.Accurate raw material powder adopts flyash, manganese slag, silicon sand, hard coal and coke fines to carry out a gradating material, through Φ 2.2 * 6.5m band Φ 3.5m centrifugal classifier raw mill grinding, fineness 12.7%.Carbide slag is through entering the biaxial rneader pre-mixing behind deironing and the foreign material and behind white filter mud, black filter mud and the accurate raw material powder process metering B grade mixture material, be discharged into two chaptrels then and roll over mixing machine mixing homogeneous, material belt behind the mixing homogeneous is delivered to the solid charge bar that the roller single-lead-screw extruding briquetting machine is shaped to Φ 13mm, and charge bar is sent into the shaft kiln calcination ripe material through belt.
In the trial production, 3 days average resistance to compression 30.3MPa of grog, 28 days average resistance to compression 60.7MPa, fCaO1.7%, grog good security.Grog is on average joined hot 2679KJ/kg (640.9Kcal/Kg), and shaft kiln output improves 37.2%.
Claims (7)
1. a shaft kiln utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker, it is characterized in that adopting the Wingdale in all or part of replacement cement raw mix proportioning of drying acetylene carbide slag, with the main raw material of drying acetylene carbide slag as raw material, direct and other raw material through a gradating material grinding carries out B grade mixture material, mix, make raw material rod or raw material ball, enter shaft kiln calcination and become cement clinker.
2. shaft kiln according to claim 1 utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker, it is characterized in that described raw meal proportioning is a two-stage batching: be basic raw material with the carbide slag, the siliceous raw material that need are additional, correction material, coal-fired and necessary mineralising sintering agent is made " accurate raw material powder " A through a gradating material grinding, the perhaps siliceous raw material that will replenish, correction material, coal and necessary mineralising sintering agent and part Wingdale are made " accurate raw material " B through a gradating material grinding, then A powder or B powder and drying acetylene carbide slag are carried out B grade mixture material in proportion, adjust moulding moisture content through mixing again, raw material rod or raw material ball are made in moulding, enter the shaft kiln calcination ripe material.
3. shaft kiln according to claim 1 and 2 utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker, it is characterized in that described drying acetylene carbide slag is the carbide slag that chemical enterprise adopts drying acetylene technology to produce, major ingredient is Ca (OH)
2, water content is 2～16%.
4. shaft kiln according to claim 1 utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker, it is characterized in that described raw material rod or the raw material ball made, be to use all kinds of roller single-lead-screw extruding briquetting machines or all kinds of extrusion shaping machine to be shaped to solid charge bar or hollow charge bar; Or utilize pan-pelletizer, the moulding of relative rolling type shaper.
5. shaft kiln according to claim 2 utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker, it is characterized in that described siliceous raw material refers to contain the higher clay of silicon-dioxide, shale, flyash, slag, spoil and other inorganic mineral and industrial residue; Correction material comprises siliceous correction material, ferro-controlling raw material, aluminium matter correction material, refers to for adjusting suitable raw material CaO, SiO
2, Al
2O
3, Fe
2O
3The correction material that chemical constitution is added is as silicon sand, iron ore, sulfate slag, plumbous cadmia, high-al clay etc.; The mineralising sintering agent refers to burn till and stablize for improving clinker mineral, reduce all kinds of mineralizers burn till coal consumption and to add, crystal seed, sintering agent, coal saving powder etc., be a kind of in the muriate, fluorochemical, vitriol, nitrate, silicofluoride, permanganate, oxymuriate, perchlorate, dichromate, phosphoric acid salt and the organic acid salt that contain potassium, sodium, copper, calcium, magnesium, aluminium, iron, manganese, barium, lithium, strontium, caesium and rare earth element and grog, industrial residue, the mine tailing or several, mineralising sintering agent consumption is 2/10000ths to 10 of a raw material amount.
6. shaft kiln according to claim 2 utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker, it is characterized in that described each component percentages of raw material two-stage batching is different with technical analysis widely different according to the chemical analysis of the raw materials and fuel of getting, adopt the rational three ratio scope of control raw material to be according to the raw materials and fuel condition: saturation ratio (KH) 0.82～1.08, silicon rate (N) 1.3～3.2, aluminium rate (P) 0.9～3.5.
7. shaft kiln according to claim 1 utilizes drying acetylene carbide slag two-stage batching to produce the novel process of cement clinker, it is characterized in that described mixing adopted one or more levels mixing, homogenizer, can add moisture content for satisfying the requirement of moulding moisture content.One-level is mixed homogeneous and is referred to adopt a biaxial rneader or cored screw stirrer or wheel rolling formula mixing machine or connect disc type mill or other mechanical forced formula stirrer mixing homogeneous, an amount of simultaneously moulding requirement moisture content that replenishes; Multistage mixing homogeneous refers to adopt an above biaxial rneader or cored screw stirrer or wheel rolling formula mixing machine or the series connection disc type is ground or other forced action type mixing and blending machine devices in series combination mixes homogeneous, an amount of simultaneously moulding requirement moisture content that replenishes.
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| CN200810030708A CN101519282A (en) | 2008-02-27 | 2008-02-27 | Novel technology of vertical kiln for manufacturing cement clinker by utilizing dry acetylene sludge two-stage batching |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765890A (en) * | 2012-08-03 | 2012-11-07 | 尹小林 | Method using titanium gypsum and acetylene sludge to prepare high-calcium sulphoaluminate or high-sulfur clinkers |
| CN103387360A (en) * | 2013-07-15 | 2013-11-13 | 安徽济峰节能材料有限公司 | Calcium carbide slag cement |
| CN103796968A (en) * | 2011-09-14 | 2014-05-14 | 电气化学工业株式会社 | Lime slurry and clinker production method using same |
| CN104071996A (en) * | 2014-07-04 | 2014-10-01 | 尹小林 | Assembly system for preparing clinker from red mud, phosphogypsum and coal gangue |
| CN104211028A (en) * | 2013-06-04 | 2014-12-17 | 四川玖长科技有限公司 | Composite pellet material used for kiln method phosphoric acid technology and molding method thereof |
| US20150299040A1 (en) * | 2012-11-09 | 2015-10-22 | Verdant Cement Llc | Molten salt synthesis for manufacture of cement precursors |
| CN106675682A (en) * | 2016-06-20 | 2017-05-17 | 中国矿业大学 | Process for preparing biomass briquette coal by dehydrating and upgrading lignite |
| CN108609878A (en) * | 2018-05-29 | 2018-10-02 | 福建鼎盛元环保科技有限公司 | A kind of production line and its technique preparing aluminophosphates cementitious material using white clay |
| CN109607586A (en) * | 2019-02-21 | 2019-04-12 | 河南亿水源净水材料科技有限公司 | A kind of preparation method of water purification agent calcium aluminate powder |
| CN110898469A (en) * | 2019-11-27 | 2020-03-24 | 宜宾天原集团股份有限公司 | Method for prolonging service life of filter cloth in carbide slag slurry filter pressing process |
| CN113955958A (en) * | 2021-12-08 | 2022-01-21 | 湖南先锋防水科技有限公司 | Environment-friendly high-strength cement and preparation method thereof |
| CN114230208A (en) * | 2022-01-13 | 2022-03-25 | 湖南先锋防水科技有限公司 | High-strength cement and preparation method thereof |
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2008
- 2008-02-27 CN CN200810030708A patent/CN101519282A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796968A (en) * | 2011-09-14 | 2014-05-14 | 电气化学工业株式会社 | Lime slurry and clinker production method using same |
| CN103796968B (en) * | 2011-09-14 | 2016-04-13 | 电化株式会社 | Lime white and employ its manufacture method of grog |
| CN102765890A (en) * | 2012-08-03 | 2012-11-07 | 尹小林 | Method using titanium gypsum and acetylene sludge to prepare high-calcium sulphoaluminate or high-sulfur clinkers |
| US20150299040A1 (en) * | 2012-11-09 | 2015-10-22 | Verdant Cement Llc | Molten salt synthesis for manufacture of cement precursors |
| US10435300B2 (en) | 2013-06-04 | 2019-10-08 | Sichuan Ko Chang Technology Co., Ltd. | Raw material of composite pellets used in kiln phosphoric acid process, and forming method therefor |
| CN104211028A (en) * | 2013-06-04 | 2014-12-17 | 四川玖长科技有限公司 | Composite pellet material used for kiln method phosphoric acid technology and molding method thereof |
| CN103387360B (en) * | 2013-07-15 | 2015-12-02 | 安徽济峰节能材料有限公司 | A kind of carbide slag cement |
| CN103387360A (en) * | 2013-07-15 | 2013-11-13 | 安徽济峰节能材料有限公司 | Calcium carbide slag cement |
| CN104071996A (en) * | 2014-07-04 | 2014-10-01 | 尹小林 | Assembly system for preparing clinker from red mud, phosphogypsum and coal gangue |
| CN106675682A (en) * | 2016-06-20 | 2017-05-17 | 中国矿业大学 | Process for preparing biomass briquette coal by dehydrating and upgrading lignite |
| CN106675682B (en) * | 2016-06-20 | 2019-07-02 | 中国矿业大学 | A kind of dehydration upgrading of lignite prepares biomass coal technique |
| CN108609878A (en) * | 2018-05-29 | 2018-10-02 | 福建鼎盛元环保科技有限公司 | A kind of production line and its technique preparing aluminophosphates cementitious material using white clay |
| CN109607586A (en) * | 2019-02-21 | 2019-04-12 | 河南亿水源净水材料科技有限公司 | A kind of preparation method of water purification agent calcium aluminate powder |
| CN110898469A (en) * | 2019-11-27 | 2020-03-24 | 宜宾天原集团股份有限公司 | Method for prolonging service life of filter cloth in carbide slag slurry filter pressing process |
| CN113955958A (en) * | 2021-12-08 | 2022-01-21 | 湖南先锋防水科技有限公司 | Environment-friendly high-strength cement and preparation method thereof |
| CN114230208A (en) * | 2022-01-13 | 2022-03-25 | 湖南先锋防水科技有限公司 | High-strength cement and preparation method thereof |
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Application publication date: 20090902 |