CN102153355A - Method for manufacturing inner cylinder of cyclone preheater of cement kiln - Google Patents

Method for manufacturing inner cylinder of cyclone preheater of cement kiln Download PDF

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Publication number
CN102153355A
CN102153355A CN2010105844412A CN201010584441A CN102153355A CN 102153355 A CN102153355 A CN 102153355A CN 2010105844412 A CN2010105844412 A CN 2010105844412A CN 201010584441 A CN201010584441 A CN 201010584441A CN 102153355 A CN102153355 A CN 102153355A
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kiln
inner core
parts
incubated
cement
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赵尚云
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XINJIANG XINZHU KILN TECHNOLOGY CO LTD
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XINJIANG XINZHU KILN TECHNOLOGY CO LTD
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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 method for manufacturing an inner cylinder of a cyclone preheater of a cement kiln. The method comprises the following steps: raw material proportioning, mixing, forming, drying and firing. The manufactured abrasion-resistant ceramic inner cylinder of the preheater is a novel product developed for a front preheating system of a novel dry linear kiln. The inner cylinder has the characteristics of high temperature resistance, oxidization resistance, corrosion resistance, abrasion resistance, energy conservation, consumption reduction, long service life and the like, and can be applied in the cement industry; and waste heat generated by the cement is fully utilized, thereby saving energy sources.

Description

A kind of making method of cement kiln cyclone preheater inner core
Technical field
The present invention relates to a kind of making method of cement kiln cyclone preheater inner core.
Background technology
The wear-resisting inner core of preheater is the novel product for pre-heating system development before the new dry process line kiln, it has characteristics such as high temperature resistant, anti-oxidant, corrosion-resistant, wear-resistant, energy-saving and cost-reducing, long lifetime, be applied in the cement industry, can make full use of the waste heat that cement produces, save energy.
Germany big vast fort company in last century the fifties be heating agent with the kiln discharge high-temp waste gas, at the cellar for storing things tail suspended preheater (suspension preheater is called for short SP) is installed and is realized, and at first be applied to the preheating of cement slurry
Figure BSA00000382492300011
On the kiln, make the unit heat consumption of former wet-process rotary kiln be reduced to 4400KJ/Kg.cl, and throughput significantly increases, obtained huge economic benefit, started the application of suspension preheating technology on Cement industry by 6875KJ/Kg.cl.
1971, company of Ishikavajima-Hariama Heavy Industry was modified into the cement nsp kiln again on the basis of big vast fort kiln, was called for short the NSP kiln; NSP is the abbreviation of NEW suspension preheater, i.e. the abbreviation of novel suspended preheater.
SP kiln and NSP kiln have become the main development kiln type of current Cement industry.
The principal feature of SP kiln and NSP firer skill is to have introduced suspended preheater; Suspended preheater mostly is Pyatyi, level Four etc. at present.Suspended preheater is one of nucleus equipment of New Type Dry-process Cement Production process, is bearing multinomial functions such as material heating, gas solid separation, mass transport and part physics, chemical reaction; Wherein the whirlwind inner core is the key part of preheater, can avoid the secondary circulation of material, and reheat regenerates CaCO 3, cause energy dissipation; Can also avoid simultaneously that separation efficiency reduces, hear rate increases because of streams short circuit, turbulent flow cause, even line clogging, stopping production etc.
Existing theory and practice outcome research shows: the raising of high temperature level whirlwind tube separation efficiency is more much bigger to the contribution of system thermal efficiency than low temperature level whirlwind tube.If final stage do not establish inner core, then feed separation efficient will reduce by 10%, make hear rate increase about 20kj/kg grog, and one therefore 5000t/d dry method line annual and industrial exhaust heat that waste is just marked coal up to the 1000-2000 ton; The more important thing is that line clogging, thermo-efficiency reduction even the mark coal of being wasted that stops production because of no inner core causes will be multiplied.Therefore, final stage (referring to level Four or Pyatyi) preheater inner barrel is very crucial to heat energy utilization rate, the equilbrium running that improves total system.
At present, preheater inner barrel remains based on the kuromore steel.Because the aggressiveness of heat-resisting alloy steel acid and alkali-resistance atmosphere is relatively poor and the non-refractory wearing and tearing, therefore, the work-ing life of steel alloy inner core is all very short, and intact length of service was approximately about 6-10 month.
With the alloy non-refractory, acid-alkali-corrosive-resisting, congenital deficiency such as wear no resistance are not compared, the non-metal base stupalith has high temperature resistant, resistance to oxidation, the hot strength height, wear resistance is good and be subjected to advantages such as soda acid atmosphere image is little, therefore, the preparation of adopting non-metal base material replacement nickel Chrome metal powder to be used for inner core has become researchist's and manufacturing enterprise common recognition in the industry, still, because the design problem in material and configuration aspects does not have the application of success so far.
Both at home and abroad the primary structure of the suspension preheating inner core of new type nonaqueous cement production line is mainly two kinds of monoblock type and split blade types.
The split blade type inner core generally is made up of tens inner core link plates and fixed block, interconnect between each sheet, so both can guarantee the inner core integral intensity, can absorb the dimensional change that inner core causes because of expanding with heat and contract with cold again, for institute of various countries' cement equipment manufacturers generally adopts, as Japanese ONODA cement company, FLS Corp of German KHD company and Denmark etc.
No matter monoblock type or split blade type, the inner core material is always based on nickel chromium triangle series high temperature steel.Because inner core (especially final stage inner core) working condition is very abominable, as wearing and tearing, the oxidation of high temperature substrate materials flow and contain K 2O, Na 2O, SO 2, Cl 2Deng the corrosion of gas, work-ing life is very short and easily cause the production fault and stop production.Therefore, some external enterprises have to cancel the final stage inner core, have just adopted this design as Smith's cyclone preheater and Denmark FLS Corp on LP (low pressure loss) whirlwind tube, but such design sacrifice is that separation rate reduces, hear rate increases.For solving inner core longevityization problem, Denmark's Haas is reined in (HASLE) company and had once been carried out with refractory materials (aluminium silicon system, Al in late nineteen nineties in last century 2O 3=62%) be main ceramic inner barrel, its structure is with " worker " or " [" shaped brick is engaged and form whole inner core.Because this fragment of brick is mechanical pressing and burns till through high temperature that limited by mould, block dimensions is less, therefore assembling inconvenience and do not have stress relieve, ability of regulation and control, easy fracture during fragment of brick uses, fall brick even integral body comes off, and application fails always.
In addition, cement industry most important equipment supplier---Denmark Smith also once tested in China with similar scheme, also ended in failure at last in the world.Inner core longevityization does not obtain progress always.
In view of the critical role of inner core in the energy-saving and emission-reduction of new dry process line, in reducing production costs, domestic enterprise is constantly exploring, is testing aspect the inner core longevityization always.
2008,1,400,000,000 tons of China's cement outputs accounted for 50% of the world, the output No. 1 in the world.More than 1000 on the total new dry process line in the whole nation, dry method line output is near 54% of total amount; Also will transform the new dry process line that builds up more than 200 at least on superseded existing shaft kiln basis in the future, China will have the industrial scale of more than 1200 on new dry process line when the time comes.And huge industrial scale also provides the vast market space for the popularization of research, test and the product innovation of longevity inner core.
Short work-ing life at suspended preheater alloy inner core, influence problems such as equipment operation and increase Cement Production ability, domestic enterprise has carried out similar Denmark Haas and has reined in test with Smith, also not success, up to the present, the precedent that does not also have achieving success with the work of non-metallic material instead of alloy steel trial inner core longevityization.
Have high temperature resistant, resistance to oxidation, hot strength height, wear resistance is good and is subjected to soda acid atmosphere to influence advantage such as little with regard to non-metallic material and see, non-metallic material are the working conditionss that are well suited for being used for the final stage inner core of suspended preheater, also by the insider had an optimistic view of.But no matter Denmark Smith, Haas are reined in the ceramic inner barrel of (HASLE), and the ceramic inner barrel of still domestic other enterprises' developments all not have to test successfully, reason nothing more than following some:
1) configuration design is unreasonable.
2) after 〉=1500 ℃ of high temperature burn till, the fragility of aluminium silicon based material is very big, transportation, very easily in the assembling process causes recessive stress scar, thus the fracture in causing using, fragmentation.
3) the similar Haas ceramic brickwork structure of reining in (HASLE) be difficult to possess digestion, the ability of buffering stress, the stress during use is easy to cause the fracture of interlock position, and then whole inner core comes off.
4) although the anti-SO of aluminium silicon based material 2, Cl 2Corrodibility Deng sour gas is stronger, but anti-K 2O, Na 2The corrodibility of O a little less than.Under the high temperature working conditions, K 2O, Na 2The perviousness of O in aluminium silicon based material is very strong, by forming kaliophylite (K 2O.Al 2O 3/ .2SiO 2) and white garnet (K 2O.Al 2O 3.4SiO 2) and cause material " alkalescence " sex change, strength degradation, easily come off.
Find out that thus in fact the reason of failure is exactly not resolve the design problem of material and configuration aspects both at home and abroad.Therefore, realize inner core non-metal base inner core longevityization, must be conceived to the combination of material design and mechanism design, because of the material project organization, the material requirement: sintering strength height, wear resistance are good, and the acid and alkali-resistance atmosphere corrosion; Structural requirement: can digest, alleviate the gas-solid two-phase forms in thermal expansion stress and the preheating whirlwind bucket streams and scratch the imbalance of structure is impacted and the structural stress of formation.
Through document investigation, prepare the patent of aspect both at home and abroad about non-metal base whirlwind inner core, nothing more than above-mentioned tested several, single all do not have successfully, at the experimental stagely promptly fails.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, a kind of making method of cement kiln cyclone preheater inner core is provided, the preheater wear-resistant ceramic inner core that the present invention makes is the novel product for pre-heating system development before the new dry process line kiln, it has characteristics such as high temperature resistant, anti-oxidant, corrosion-resistant, wear-resistant, energy-saving and cost-reducing, long lifetime, be applied in the cement industry, can make full use of the waste heat that cement produces, save energy.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of making method of cement kiln cyclone preheater inner core, described making method comprises the following steps:
1), the weight part proportioning of raw material:
23 parts of SiC, AL 2O 310 parts, Si 3O 420 parts, SiO 221 parts, 16 parts of 10 parts of MgO and methylcellulose gum;
2), mixing slurrying:
With the raw material of choosing, adopt the high speed mixing roll, batch mixing slurrying makes pug even, and processability is good;
3), moulding:
The tolerance of dimension of forming mould is controlled at ± 0.1mm in, with the precision of the size that guarantees product;
4), drying:
Adopt far infrared rays electrical drying device, the moisture content in the adobe is discharged from inside to outside, the remaining moisture content weight content of going into the kiln adobe is controlled at below 0.1%;
5), burn till:
Adopt 10M 3Or 20M 3Rib formula kiln, high-purity nitrogen burns till, and kiln temperature is even, and temperature deviation is at ± 2 ℃;
0 ℃ to 300 ℃ is the heat preservation and dryness time, is incubated 24 hours; 300 ℃ to 600 ℃, be incubated 12 hours; 600 ℃ to 1200 ℃, be incubated 12 hours; 1200 ℃ to 1600 ℃, be incubated 12 hours; 1600 ℃ to 2000 ℃, be incubated 12 hours.
The silicon carbide weight content is more than 98.5% in the described sic raw material, Fe 2O 3Weight content is lower than 0.35%, and crystal development is perfect, particle is fine and close, volume density＞3.0g/cm 3
All pollution-free in starting material that preheater wear-resistant ceramic inner core production of the present invention is used and the product processes process.One, what kiln preheater suspension member originally used is metal founding, has toxicity, country has expressly provided and has banned use of.And ceramic inner barrel does not contain the chromium element, does not produce any toxicity.The silicon carbide that the silicon nitride ceramics product uses through smelting, is neither smelted in producing ceramic suspension member, does not also have dust, does not discharge toxic gas; Two, ceramic inner barrel does not have discharge of wastewater, not polluted source aborning; Its three, what product burnt till usefulness is electric energy, so human body and atmosphere are not had any pollution, is a kind of clean fuel, this electric energy is the cleanest most important energy during national chemical industry is produced, and the constant product quality of firing.
What preheater inner barrel used at present is alloy, following defective is arranged, such as: shortage of resources, be worth costliness, not wear-resisting under the high temperature, acid-proof alkaline is poor, easily oxidation, work-ing life is short, and Pyatyi tube work-ing life is about 1 year, have a strong impact on the cement rotary kiln waste heat and make full use of raising with production efficiency, also seriously restricted the further raising of industry energy conservation consumption reduction pollution treatment and economic benefit.
The ceramic inner barrel that the present invention makes has high temperature resistant, corrosion-resistant, anti-oxidant, and anti abrasive good characteristic is applied on the preheater inner barrel, and can reach 4-5 work-ing life, improves 4-5 times of work-ing life; Cost can reduce more than 70%; Profit can reach more than 3 times.Can reach the long-term safety running fully, environmental protection and energy saving, consumption reduction synergy, market outlook are wide, are the inexorable trends of the inside and outside high temperature steel inner core of using always of subrogate country, are novel material, the new technologies that substitutes traditional high temperature steel inner core.
The products characteristics that the present invention makes has:
1. high temperature resistant: can be in 1700 ℃ of following working ranges life-time service.
2. pollution-free: no waste gas, discharge of wastewater.
3. anti-rapid heat cycle: in 1100 ℃ of cold water, place repeatedly 20 times, do not rupture, excellent.
4. wear resistance is good: be steel alloy 4-5 doubly, be violent steel 8-10 doubly, be 20 times of carbon steel.
5. long service life: work-ing life 4-5.
6. in light weight: weight is less than 1/2 of high temperature steel.
7. energy-conserving and environment-protective: do not have waste gas and contaminated wastewater, meet the energy-saving and emission-reduction policy that country advocates.
8. increase income and economize on spending: the instead of steel inner core, will save more than 3,000,000,000 yuan for cement industry in 1 year.
Thereby, the wear-resisting inner core of preheater that the present invention makes is the novel product for pre-heating system development before the new dry process line kiln, it has characteristics such as high temperature resistant, anti-oxidant, corrosion-resistant, wear-resistant, energy-saving and cost-reducing, long lifetime, be applied in the cement industry, can make full use of the waste heat that cement produces, save energy.
The preheater wear-resistant ceramic inner core that the present invention makes has high strength, high temperature resistant, high rigidity, corrosion-resistant, anti-oxidant, the emergency heat and cooling property resistance chilling, good thermal shock, fundamental property and principal features such as the good and thermo-efficiency height of heat conduction, be particularly suitable at high temperature, high wearing and tearing, life-time service under the severe environment such as high soda acid atmosphere corrosion and blast air wash away, thoroughly solved under the inner severe environment of preheater, the high temperature steel inner core is yielding to come off, life-span short (only 1 year work-ing life), the frequent stopping production changed, influence cement output, increase the problem of enterprise's production cost and hand labor intensity.
Succeeding in developing of ceramic inner barrel of the present invention is that the cement industry preheater is the technological breakthrough and the technological revolution in preheater inner barrel field by novel material, the new technology of ceramic inner barrel replacement high temperature steel inner core in the world.
Thereby, the wear-resisting inner core of preheater that the present invention makes is the novel product for pre-heating system development before the new dry process line kiln, it has characteristics such as high temperature resistant, anti-oxidant, corrosion-resistant, wear-resistant, energy-saving and cost-reducing, long lifetime, be applied in the cement industry, can make full use of the waste heat that cement produces, save energy.
Embodiment
1. the selection of raw material:
23 parts of SiC, AL 2O 310 parts, Si 3O 420 parts, SiO 221 parts, 16 parts of 10 parts of MgO and methylcellulose gum;
Chemical ingredients requirement according to product, sic raw material adopts the high-power resistance furnace of 10000KW, with purity height, refinery coke and silica that foreign matter content is low is the sic raw material that the raw material melting forms, this sic raw material purity height, carborundum content is 98.5%, through strict acid cleaning process, guarantee Fe in the sic raw material in the processing 2O 3＜0.35%; Crystal development is perfect, particle is fine and close, volume density height (＞3.0g/cm 3), be beneficial to and produce highdensity product.
2. mixing:
Raw material mixes the quality that whether evenly directly has influence on product, adopt the high speed mixing roll, adopt the level Four batching according to material closestpacking principle, select highly purified interim wedding agent for use, make pug even, processability is good, makes work in-process get to the volume density of requirement, and making gas cell distribution reasonable, size is evenly; Being beneficial to nitrogenize burns till.
3. moulding:
According to the requirement of the physical dimension of product, the size of designing mould is used advanced numerically-controlled machine processing mold, the tolerance of dimension of forming mould is controlled at ± 0.1mm in, with the precision of the size that guarantees product.
4. dry:
In sintering process, very strict to the content requirement of water vapour, if following reaction will take place in the content height of water vapour in the firing atmosphere:
SiC+3H 2O(g)------＞SiO 2+CO+3H 2
Si+2H 2O------＞SiO 2+3H 2
In order to strengthen the density of nitrogenize and product, adopt far infrared rays electrical drying device, the moisture content in the adobe is discharged from inside to outside, the remaining moisture content of going into the kiln adobe is controlled at below 0.1%, thereby improved the nitrogenize efficient of silica flour and the compactness extent of product, also improved drying efficiency simultaneously.
5. burn till:
Calcination equipment and firing process are the factors of quality product most critical, for the good goods of obtained performance, on calcination equipment, adopt 10M 3Or 20M 3Rib formula kiln, this kiln burn till parameter by computer controlled automatic, kiln temperature is even, temperature deviation is at ± 2 ℃, goods six faces in sintering process are heated, and are heated evenly, and nitridation evenly and fully, product performance are stable, avoided electrical kiln to burn till the uneven shortcoming of nitridation that middle goods single face is heated and causes.
Concrete heating curve and soaking time:
0 ℃ to 300 ℃ is the heat preservation and dryness time, is incubated 24 hours; 300 ℃ to 600 ℃, be incubated 12 hours; 600 ℃ to 1200 ℃, be incubated 12 hours; 1200 ℃ to 1600 ℃, be incubated 12 hours; 1600 ℃ to 2000 ℃, be incubated 12 hours.
Adopt domestic state-of-the-art high-power 200M 3Nitrogen plant, this Nitrogen plant output is big, can satisfy the use of six rib formula kilns, nitrogen gas purity is up to 99.995%, and pressure-stabilisation makes oxygen pressure-controlled in the firing atmosphere 0.002%, the formation and the lattice that had both helped silicon nitride are grown, and have reduced the SiO in the goods simultaneously 2Generation.
What adopt on firing technology is large-scale shuttle kiln muffle forming technology, according to the DTA curve of metallic silicon power nitrogenize, use the gas consumption temperature-raising method, formulate the nitrogenize calcining system, and it is directly inputted in the computer automatic control system, by computer program control, reduced artificial factor, make speed of response obtain strict control, avoided reaction superheated problem, make the abundant nitrogenize of metallic silicon power, the assurance goods are nitridation sintered to physically well develop with silicon nitride crystal, obtains satisfied physicochemical property.
The inspection of apparent size, standard block-by-block is as agreed checked size, affixes one's seal, adopt advanced clip and rubbed brick equipment simultaneously, can goods be cut into the virtually any size specification according to user's needs, planeness is less than 0.2mm, and ceramic inner barrel length all can be produced from 1m-3m.
The inspection of technical indicator, the qualified product of appearance and dimension check all will carry out the inspection of technical indicator, adopts large-scale test sets such as domestic products import fluorescence analyser, and examination criteria is carried out national standard, and the technical indicator that can satisfy production and ceramic inner barrel detects.
The preheater wear-resistant ceramic inner core that the present invention makes is a high-tech product, accurate prescription of employing science and strict reasonably production technique, carry out advanced technical parameter, add strict quality certification system, comprehensive advanced production technology and technology both at home and abroad, adopt fine raw material and increasingly automated production technique, major technique is implemented to require as follows:
1. the raw-material quality of strict control is equipped with perfect physico-chemical testing equipment and instrument; Stop starting material inferior and enter production process.
2. different variety of raw material are processed separately, deposited separately, avoid it to mix mutually and pollute, to the strict classification of sieving of the starting material after pulverizing, branch grade and kind divide warehousing to put.
3. the employing projection electronic weighing is realized the accurate dosing composition, mixes through forced mixer.
4. advanced moulding process and precision die moulding are adopted in the moulding of product, to guarantee the accuracy of small product size density and intensity and physical dimension, exactness.
5. to half-finished drying, carry out the tunnel drier drying, guarantee work in-process blank drying quality.
6. finished product is burnt till and carry out high temperature and burn till, can adopt three kinds of oil, gas, electricity to fire a kind of in the product, use instrument for automatic control thermometric and temperature adjustment according to local condition, strict control kiln inner pressure, temperature and atmosphere guarantee that product reaches good sintering degree.
7. according to different purposes, different user, the different requirement and different construction conditions tested respectively, determines different production technique and construction technology, guarantees the good service and the technical guarantee of working-yard.
8. finished product implementation warehouse is deposited, and divides kind, and performance is tightly preserved, and avoids polluting mixing, and finished product is put in storage and dispatched from the factory and all passes through technical quality department after the assay was approved, can handle the warehouse-in and the formality of dispatching from the factory.
9. the process specification of science, strict technical requirements is guaranteed by advanced person's mechanized production system.
Application examples
Preheater inner barrel generally adopts heat-resisting steel goods at present, also belongs to first and quote full pottery.Prove through wing east cement huge rock limited liability company and the practical application of village, Xinjiang Shawan face cement branch office of river mud company limited, the product that the embodiment of the invention 1 is made has reached 18 months respectively and 16 months work-ing life on the preheater of 3200t/d and 1000t/d, now still running well, not damaged, can arrive 4-5 according to a preliminary estimate, really have anti-oxidant, wear-resistant, characteristics such as long lifetime, effect is very good, and overall weight is light, and is easy for installation, alleviated workmen's labour intensity greatly.
It should be noted that at last: obviously, the foregoing description only is for example of the present invention clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being amplified out thus or change still are among protection scope of the present invention.

Claims (2)

1. the making method of a cement kiln cyclone preheater inner core is characterized in that, described making method comprises the following steps:
1), the weight part proportioning of raw material:
23 parts of SiC, AL 2O 310 parts, Si 3O 420 parts, SiO 221 parts, 16 parts of 10 parts of MgO and methylcellulose gum;
2), mixing slurrying:
With the raw material of choosing, adopt the high speed mixing roll, batch mixing slurrying makes pug even, and processability is good;
3), moulding:
The tolerance of dimension of forming mould is controlled at ± 0.1mm in, with the precision of the size that guarantees product;
4), drying:
Adopt far infrared rays electrical drying device, the moisture content in the adobe is discharged from inside to outside, the remaining moisture content weight content of going into the kiln adobe is controlled at below 0.1%;
5), burn till:
Adopt 10M 3Or 20M 3Rib formula kiln, high-purity nitrogen burns till, and kiln temperature is even, and temperature deviation is at ± 2 ℃;
0 ℃ to 300 ℃ is the heat preservation and dryness time, is incubated 24 hours; 300 ℃ to 600 ℃, be incubated 12 hours; 600 ℃ to 1200 ℃, be incubated 12 hours; 1200 ℃ to 1600 ℃, be incubated 12 hours; 1600 ℃ to 2000 ℃, be incubated 12 hours.
2. the making method of a kind of cement kiln cyclone preheater inner core as claimed in claim 1 is characterized in that: in the described sic raw material silicon carbide weight content more than 98.5%, Fe 2O 3Weight content is lower than 0.35%, and crystal development is perfect, particle is fine and close, volume density＞3.0g/cm 3
CN2010105844412A 2010-12-13 2010-12-13 Method for manufacturing inner cylinder of cyclone preheater of cement kiln Pending CN102153355A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109033511A (en) * 2018-06-15 2018-12-18 武汉理工大学 A kind of quality coal in cement kiln systems heat consumption analysis method of combined data driving and data mining
CN113686161A (en) * 2021-08-27 2021-11-23 江苏双发机械有限公司 Method for sintering and curing inner barrel hanging piece of castable preheater and inner barrel hanging piece

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109033511A (en) * 2018-06-15 2018-12-18 武汉理工大学 A kind of quality coal in cement kiln systems heat consumption analysis method of combined data driving and data mining
CN109033511B (en) * 2018-06-15 2019-06-07 武汉理工大学 A kind of quality coal in cement kiln systems heat consumption analysis method of combined data driving and data mining
CN113686161A (en) * 2021-08-27 2021-11-23 江苏双发机械有限公司 Method for sintering and curing inner barrel hanging piece of castable preheater and inner barrel hanging piece

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Application publication date: 20110817