CN106348629B - A kind of cement grinding preparation technology - Google Patents

A kind of cement grinding preparation technology Download PDF

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Publication number
CN106348629B
CN106348629B CN201610718536.6A CN201610718536A CN106348629B CN 106348629 B CN106348629 B CN 106348629B CN 201610718536 A CN201610718536 A CN 201610718536A CN 106348629 B CN106348629 B CN 106348629B
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cement
grinding
mixing material
clinker
mixing
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CN106348629A (en
Inventor
莫志胜
陈雪梅
阳运霞
吴逍
喻庆华
张凌志
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Jia Hua Special Cement Inc Co
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Jia Hua Special Cement Inc Co
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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
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/48—Clinker treatment
    • C04B7/52—Grinding ; After-treatment of ground cement
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)

Abstract

The invention discloses a kind of cement grinding preparation technology, belong to construction material processing technique field.The technique comprises the following steps：1）Clinker is sieved into coarse granule and fine grained with screen cloth；2）The coarse granule in step 1) is crushed with roll squeezer, and will it is broken after clinker and step 1）In fine grained mixing, then crushed again with disc grinder or cone mill；3）By step 2）It is middle to add grinding in ball mill in the lump with mixing material I with clinker of the disk after broken；4）After the grinding of mixing material II, with step 3）Obtained material mixing, obtains the cement.There is the advantages of mill efficiency is high, and cost is low by the present invention, and obtained cement granules grading is more reasonable, the physical and chemical performance such as service behaviour, intensity is more preferable.

Description

A kind of cement grinding preparation technology
Technical field
The present invention relates to a kind of cement grinding preparation technology, belong to construction material processing technique field.
Background technology
First, grinding in cement " two mill one burn " this core always in occupation of consequence.According to coarse analysis, one Individual cement production enterprise, which is produced in total power consumption, has 70% to be used in raw material and cement grinding, wherein, have up to 97% power consumption idle work Only 3% power consumption just really serves crushing function.Therefore, cement grinding has inestimable in cement production process Effect.Secondly, now, important step of the cement grinding mill as grinding system, in order to energy-saving, using the pre- grinding of roll squeezer System carries out grinding, compared to relatively more obvious energy-conserving action is served in the past, is also used extensively by each cement plant.
In roll squeezer pregrinding system, between the equal 0.8-1.6mm of roll squeezer roller bearing spacing, for the clinker that particle diameter is too small Grain destruction unobvious.Tiny in the clinker knot grain of new technology production, grain composition is very wide to micron order distribution by Centimeter Level, Possess large-sized tricalcium silicate（50 μm of ＞）With the dicalcium silicate of small size（20 μm of ＜）, and tricalcium silicate lacks with certain Fall into, for the angle of theory, these features are more beneficial for cement grinding.But the HLMC clinkers of new technology production is tiny Particle and existing roll squeezer pregrinding system can not more efficiently co-ordination, most clinker particle diameter is less than roll squeezer Roll gap, roll squeezer pregrinding system is caused not do work effectively, and little particle clinker glomeration, according to stress distribution feature, ball Shape Particle Breakage needs bigger stress, so causing clinker grinding inefficient.
State Intellectual Property Office disclosed a Publication No. CN1315299 in 2001, entitled " high thin mixing material with The patent of invention of high thin chamotte powder separate compiling hybrid technique ", grinding process disclosed in the patent are：Mixing material and cement is ripe Feed powder separate compiling, then the thin mixing material of height after separate compiling and chamotte powder are stirred and evenly mixed.Although this method can solve mixed That is easily ground caused by closing the material grinding difficulty different from clinker first touches the mark, and hardly possible mill can not go out mill, and caused power consumption is high Problem, but can not solve the problems, such as that the power consumption that clinker/mixing material of different milling difficulty is brought is high, its efficiency that is milled is not still high, Electric energy still consumes greatly.
The content of the invention
Present invention seek to address that cement clinker particles particle diameter distribution is wide in the prior art, it is difficult to which all broken, tiny is ripe The problem of material particle is round and smooth, causes in grinding process, and mill efficiency is low, and power consumption is big, there is provided prepared by a kind of new cement Method, cement granules grading prepared by this method is more reasonable, and the physical and chemical performance such as service behaviour, intensity is more preferable.
In order to realize foregoing invention purpose, technical scheme is as follows：
A kind of cement grinding preparation technology, it is characterised in that：Comprise the following steps：
1）Clinker is sieved into coarse granule and fine grained with screen cloth；
2）The coarse granule in step 1) is crushed with roll squeezer, and will it is broken after clinker and step 1）In it is thin Particle mixes, and is then crushed again with disc grinder or cone mill；
3）By step 2）It is middle to add grinding in ball mill in the lump with mixing material I with clinker of the disk after broken；
4）After the grinding of mixing material II, with step 3）Obtained material mixing, obtains the cement；
The mixing material I is the mixing material of mill more difficult than cement, such as Titanium slag, the Black Warrior；The mixing material II is easier than cement The mixing material of mill, such as lime stone.
Further, step 1）In, the mesh size is 10mm, i.e., coarse grained particle diameter is more than 10mm；It is fine grain Particle diameter is less than 10mm.
Step 2）In, the gap of the roll squeezer is less than 10mm, the gap index contribute to it is coarse grained broken, after crushing Grain diameter is 10mm or so.
Step 2）In, the spacing of the disc grinder mill is 1~4mm, and grain shape is mostly sheet after crushing.
Weight ratio in the mixing material I shared by particle of the particle diameter less than 1mm is more than 90%.
Step 3）In, the ball mill grinding to material specific surface area is more than 350m2/kg。
Step 4）In, the specific surface area after the grinding of mixing material II is more than 400m2/kg。
Beneficial effects of the present invention：
（1）Coarse granule after separating coarse granule and fine grained, is first passed through roller by the present invention by first being sieved clinker After being mixed again with fine grained after press is broken, crushed, handled in shattering process using disc grinder meeting cone mill, a side Face is to realize that basic function improves the fineness of powder, is on the other hand the ball state shape for destroying particle, into ball mill Grinding before when, fineness of materials has reached certain degree, can reduce the energy loss of ball mill, by main energy quantity set In in step 2）In, contribute to the shaping of cement granules, improve the efficiency of grinding.
By step 2）, step 3）Multiple crushing, can effectively change the structure of material, structural change includes establishing New surface and make to produce defect inside material（Crackle, dislocation etc.）, can effectively solve the problem that because powder particle is round and smooth, cause powder Grind the problem of efficiency is low, cost is high.
（2）Step 3 of the present invention）In, use spacing to be crushed again for 1~4mm disc grinder, fully play broken The advantage of efficiency high, and broken rear clinker particles are mostly sheet, are advantageous to the raising of mill efficiency below, and power consumption is low.
（3）In the present invention, the requirement of the grain diameter of mixing material I<1mm proportion requirement is more than 90%, hard due to mixing material I Spend it is larger, it is difficult compared with clinker to grind, in grain diameter<In the case of 1mm, the energy consumption of grinding can be reduced, improves the matter of cement grinding Amount.
（4）In the present invention, the specific surface area of mixing material II is more than 400m2/ kg, help to create micro aggregate effect, accelerate effect Should and activating effect, so as to improve the quality of cement.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
Embodiment 1
A kind of cement grinding preparation technology, comprises the following steps：
1）Clinker is sieved into coarse granule and fine grained with screen cloth；
2）The coarse granule in step 1) is crushed with roll squeezer, and will it is broken after clinker and step 1）In it is thin Particle mixes, and is then crushed again with disc grinder or cone mill；
3）By step 2）It is middle to add grinding in ball mill in the lump with mixing material I with clinker of the disk after broken；
4）After the grinding of mixing material II, with step 3）Obtained material mixing, obtains the cement；
The mixing material I is the mixing material of mill more difficult than cement；The mixing material II is the mixing material of mill easier than cement.
Embodiment 2
The present embodiment is described further by taking Portland cement grinding process as an example to technical scheme.
A kind of preparation method of Portland cement, step are as follows：
1）The Portland clinker that percentage by weight is 85% is sieved into coarse granule and fine grained with screen cloth；
2）The coarse granule in step 1) is crushed with roll squeezer, and will it is broken after clinker and step 1）In it is thin Particle mixes, and is then crushed again with disc grinder or cone mill；
3）By step 2）The middle clinker with disk after broken and 10% Titanium slag add grinding in ball mill in the lump；
4）After 5% lime stone grinding, with step 3）Obtained material mixing, obtains the Portland cement.
In the present embodiment, step 1）In, mesh size 10mm.
Step 2）In, the gap of the roll squeezer is 10mm.
Step 2）In, the spacing of the disc grinder mill is 3mm；Clinker is less than particle diameter with Titanium slag through disc grinder grinding Weight ratio shared by 1mm particle is 80%.
Step 3）In, ball mill grinding to material specific surface area is 346m2/kg。
Step 4）In, the mixing material II is lime stone, and the specific surface area after grinding is 410m2/kg。
Embodiment 3
A kind of preparation method of Portland cement, step are as follows：
1）The Portland clinker that percentage by weight is 85% is sieved into coarse granule and fine grained with screen cloth；
2）The coarse granule in step 1) is crushed with roll squeezer, and will it is broken after clinker and step 1）In it is thin Particle mixes, and is then crushed again with disc grinder or cone mill；
3）By step 2）The middle clinker with disk after broken and 10% ground phosphate rock add grinding in ball mill in the lump；
4）After 5% lime stone grinding, with step 3）Obtained material mixing, obtains the Portland cement.
In the present embodiment, step 1）In, mesh size 10mm.
Step 2）In, the gap of the roll squeezer is 8mm.
Step 2）In, the spacing of the disc grinder mill is 1mm；Clinker crushes with Titanium slag through disc grinder, makes particle diameter Less than the weight ratio about 90% shared by 1mm particle（Material is sheet after broken, therefore it is 1mm's to have part to pass through aperture Screen cloth）.
Step 3）In, the ball mill grinding to material specific surface area is 358m2/kg。
Step 4）In, the specific surface area after the grinding of mixing material II is 418m2/kg。
Embodiment 4
The present embodiment and the difference of embodiment 3 are：
Step 2）In, the gap of the roll squeezer is 9mm；The spacing of disc grinder mill is 1mm；Clinker and phosphorus ore slag/titanium Weight ratio in slag shared by particle of the particle diameter less than 1mm is 94.2%.
Step 3）In, the ball mill grinding to material specific surface area is 348m2/kg。
Step 4）In, the mixing material II is lime stone, and the specific surface area after grinding is 408m2/kg。
Embodiment 5
A kind of preparation method of Portland cement, step are as follows：
1）The Portland clinker that percentage by weight is 85% is sieved into coarse granule and fine grained with screen cloth；
2）The coarse granule in step 1) is crushed with roll squeezer, and will it is broken after clinker and step 1）In it is thin Particle mixes, and is then crushed again with disc grinder or cone mill；
3）By step 2）The middle clinker with disk after broken and 10% basalt add grinding in ball mill in the lump；
4）After 5% lime stone grinding, with step 3）Obtained material mixing, obtains the Portland cement.
In the present embodiment, step 1）In, mesh size 10mm.
Step 2）In, the gap of the roll squeezer is 9mm；The spacing of disc grinder mill is 1mm；Clinker and grain in basalt Weight ratio shared by particle of the footpath less than 1mm is 92%（Material is sheet after broken, therefore it is 1mm's to have part to pass through aperture Screen cloth）.
Step 3）In, the ball mill grinding to material specific surface area is 358m2/kg。
Step 4）In, the specific surface area after the grinding of mixing material II is 414m2/kg。
Embodiment 6
According to national standard《Method of determination for specific surface of cement（Bo Shi methods）》、《Test method for strength of hydraulic cement mortar》、《Cement mark Quasi- denseness water consumption, setting time, the stability method of inspection》The methods of determine cement correlated performance respectively, above-described embodiment 2, 3rd, 4 and 5 made cement products physical and chemical performances are as shown in table 1：

Claims (7)

  1. A kind of 1. cement grinding preparation technology, it is characterised in that：Comprise the following steps：
    1）Clinker is sieved into coarse granule and fine grained with screen cloth；
    2）The coarse granule in step 1) is crushed with roll squeezer, and will it is broken after clinker and step 1）In fine grained Mixing, is then crushed again with disc grinder；
    3）By step 2）It is middle to add grinding in ball mill in the lump with mixing material I with clinker of the disc grinder after broken；
    4）After the grinding of mixing material II, with step 3）Obtained material mixing, obtains the cement；
    The mixing material I is the mixing material of mill more difficult than cement；The mixing material II is the mixing material of mill easier than cement；
    The mixing material I is one kind in Titanium slag, basalt, ground phosphate rock；The mixing material II is lime stone.
  2. A kind of 2. cement grinding preparation technology as claimed in claim 1, it is characterised in that：Step 1）In, the mesh size For 10mm.
  3. A kind of 3. cement grinding preparation technology as claimed in claim 1 or 2, it is characterised in that：Step 2）In, the roll squeezer Gap be less than 10mm.
  4. A kind of 4. cement grinding preparation technology as claimed in claim 1, it is characterised in that：Step 2）In, the disc grinder mill The spacing of disk is 1~4mm.
  5. A kind of 5. cement grinding preparation technology as claimed in claim 1, it is characterised in that：Particle diameter is less than in the mixing material I Weight ratio shared by 1mm particle is more than 90%.
  6. A kind of 6. cement grinding preparation technology as claimed in claim 1, it is characterised in that：Step 3）In, the ball mill powder It is milled to material specific surface area and is more than 350m2/kg。
  7. A kind of 7. cement grinding preparation technology as claimed in claim 1, it is characterised in that：Step 4）In, the mixing material II Specific surface area after grinding is more than 400m2/kg。
CN201610718536.6A 2016-08-25 2016-08-25 A kind of cement grinding preparation technology Active CN106348629B (en)

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Publication number Priority date Publication date Assignee Title
CN108787120A (en) * 2018-07-27 2018-11-13 安徽卓煌机械设备有限公司 A kind of clinker milling process
CN110180624A (en) * 2019-07-18 2019-08-30 江苏新业重工股份有限公司 It is a kind of to crush thorough powder roll squeezer
CN111589561A (en) * 2020-05-15 2020-08-28 中建材（合肥）粉体科技装备有限公司 Powder component and particle size control system and control method thereof
CN112209723A (en) * 2020-10-12 2021-01-12 衡阳凯新特种材料科技有限公司 Grinding method of rare earth yttrium lanthanum composite silicon nitride ceramic
CN113860767A (en) * 2021-10-19 2021-12-31 广西都安西江鱼峰水泥有限公司 High-doped inferior waste residue masonry cement and production method thereof
CN116474928B (en) * 2023-06-25 2023-09-26 中才邦业(杭州)智能技术有限公司 Cement mill energy consumption optimization method and system

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Publication number Priority date Publication date Assignee Title
JPS58161955A (en) * 1982-03-17 1983-09-26 株式会社神戸製鋼所 Cement clinker crushing method
CN101130175A (en) * 2006-08-22 2008-02-27 高建忠 Method for fine-crushing materials and fine crasher thereof
CN103214198A (en) * 2013-04-18 2013-07-24 广西鱼峰水泥股份有限公司 Cement production method

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
DE102007046834B4 (en) * 2007-09-29 2010-01-14 Holcim Technology Ltd. Process for the production of cements containing granulated blastfurnace

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS58161955A (en) * 1982-03-17 1983-09-26 株式会社神戸製鋼所 Cement clinker crushing method
CN101130175A (en) * 2006-08-22 2008-02-27 高建忠 Method for fine-crushing materials and fine crasher thereof
CN103214198A (en) * 2013-04-18 2013-07-24 广西鱼峰水泥股份有限公司 Cement production method

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