CN104496233A - Preparation method for clinker of cement raw material burnability test - Google Patents
Preparation method for clinker of cement raw material burnability test Download PDFInfo
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Abstract
The invention belongs to the field of the cement production test, specifically relates to a preparation method for a clinker of a cement raw material burnability test. The preparation method comprises the following steps: a, according to the weight volume ratio cement raw material : distilled water = 5 g : 1 mL, uniformly mixing the both to obtain the wet raw material; b, weighing the wet raw material and placing in a circular forming mould to press and prepare a cake test body; and c, drying the cake test body for 2-3 h in 95-115 DEG C, burning from 400 DEG C to 950 DEG C for 30 min in the speed of 19-21 DEG C/min after taking, and burning for 30 min from the current temperature to the test temperature in the speed of 9-11 DEG C/min, then taking out and cooling at the ventilation position for future use. The method is convenient, fast, and safe, and is the better method for preparing the clinker of the cement raw material burnability test.
Description
Technical field
The invention belongs to manufacture of cement test field, be specifically related to the preparation method of a kind of cement slurry burn-ability test grog.
Background technology
Cement slurry burn-ability is the important technical index evaluating cement raw material and raw material, is selecting properly raw material, designs raw material, determines raw material preparation method and ensure important evidence and the parameter of high yield and low cost.At present, the burn-ability of cement slurry is all test according to standard GB/T26566-2011 " cement slurry burn-ability test method ", concrete grammar in this standard is: take raw material 100g, be placed in clean container, add 10mL distilled water while stirring, after mix is even, take wet raw materials 3.6g ± 0.1g at every turn, be placed in forming mould that diameter is 13mm, use pressing machine to make the lab scale body of ф 13mm with 10.6KN power.After being dried, the container filling examination body is put into the pre-burning High Temperature Furnaces Heating Apparatus pre-burning 30min of constant temperature 950 DEG C, examination body complete for pre-burning is relayed calcining at constant temperature 30min in constant temperature to the calcining High Temperature Furnaces Heating Apparatus of test temperature (1350 DEG C, 1400 DEG C or 1450 DEG C) immediately in company with container, takes out examination body after calcining immediately and be placed in air and naturally cool to room temperature.
When utilizing this standard method to detect, not easily mix thoroughly because amount of water is little, and examination body is too little need repeatedly prepare examination body.Need first pre-burning in the High Temperature Furnaces Heating Apparatus that temperature is slightly low during calcining simultaneously, then take out the High Temperature Furnaces Heating Apparatus calcining of putting into higher temperature again, and calcining is placed on the formation that slow cooling in air is unfavorable for grog crystalline structure.So not only complex steps, expend time in, and pre-burning and two stages of calcining are separated and use stove not only bad for the use of calcining furnace but also there is potential safety hazard.
The present invention needs to solve that examination body is too little, calcination process is complicated, the selection of cooling conditions after the use of amount of water, calcining High Temperature Furnaces Heating Apparatus and calcining.
Summary of the invention
Problem to be solved by this invention is to provide the preparation method of a kind of cement slurry burn-ability test grog.The method comprises the following steps:
A, cement slurry and distilled water are mixed to obtain wet raw materials, the weight of cement slurry and the volume ratio of distilled water are 5g ︰ 1mL;
B, take wet raw materials 60g ± 1g and be placed in the shaping circular die that diameter is 61mm, adopt the pressure of 1Mpa to be pressed into the cake examination body of φ 61*10mm;
C, cake tried in air drying cabinet that body is positioned over 95 ~ 115 DEG C, dry 2 ~ 3h after, taken out;
D, by after step c process cake examination body directly put into High Temperature Furnaces Heating Apparatus, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 19 ~ 21 DEG C/min, at 950 DEG C, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to test temperature with the rate of heating of 9 ~ 11 DEG C/min again, under test temperature, burn 30min;
Take out from High Temperature Furnaces Heating Apparatus immediately after e, calcining and be placed in ventilation cooling.
Preferably, the preparation method of above-mentioned cement slurry burn-ability test grog, in step a, cement slurry is 1000g, and distilled water is 200mL.
Preferably, the preparation method of above-mentioned cement slurry burn-ability test grog, in steps d, described test temperature is 1350 DEG C, 1400 DEG C or 1450 DEG C.
Preferably, the preparation method of above-mentioned cement slurry burn-ability test grog, in steps d, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 20 DEG C/min, at 950 DEG C, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to test temperature with the rate of heating of 10 DEG C/min again, under test temperature, burn 30min.
Preferably, the preparation method of above-mentioned cement slurry burn-ability test grog, in steps d, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 20 DEG C/min, at 950 DEG C, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to 1350 DEG C, 1400 DEG C or 1450 DEG C with the rate of heating of 10 DEG C/min again, and burn 30min in this temperature.
Preferably, the preparation method of above-mentioned cement slurry burn-ability test grog, in step b, the lower surface of described cake examination body is fluted.
Method of the present invention increases raw material examination body size, coordinates suitable pressure compacting, also assures that the quality of pre-burning and calcining while guaranteeing the more test sample of disposable acquisition.In addition, the present invention, by the merging of pre-burning and calcining, greatly simplify test process.The inventive method is not only test and provides sufficient test sample, and makes test process more simple, and the simplification of the increase and method that try body size can not have influence on test result.
Embodiment
A preparation method for cement slurry burn-ability test grog, comprises the following steps:
A, cement slurry and distilled water are mixed to obtain wet raw materials, the weight of cement slurry and the volume ratio of distilled water are 5g ︰ 1mL;
B, take wet raw materials 60g ± 1g and be placed in the shaping circular die that diameter is 61mm, adopt the pressure of 1Mpa to be pressed into the cake examination body of φ 61*10mm;
C, cake tried in air drying cabinet that body is positioned over 95 ~ 115 DEG C, dry 2 ~ 3h after, taken out;
D, by after step c process cake examination body directly put into High Temperature Furnaces Heating Apparatus, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 19 ~ 21 DEG C/min, at 950 DEG C, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to 1350 DEG C, 1400 DEG C or 1450 DEG C with the rate of heating of 9 ~ 11 DEG C/min again, burn 30min at this temperature;
Take out from High Temperature Furnaces Heating Apparatus immediately after e, calcining and be placed in ventilation cooling.
Preferably, the preparation method of above-mentioned cement slurry burn-ability test grog, in step a, cement slurry is 1000g, and distilled water is 200mL.
Preferably, the preparation method of above-mentioned cement slurry burn-ability test grog, in steps d, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 20 DEG C/min, at 950 DEG C, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to test temperature with the rate of heating of 10 DEG C/min again, under test temperature, burn 30min.
Preferably, the preparation method of above-mentioned cement slurry burn-ability test grog, in step b, is conducive to ventilation time in order to calcine, and the lower surface of described cake examination body is fluted.
The ratio of the cement slurry that the inventive method adopts and water jointly determines according to calcining process after follow-up oven dry etc., when 5g cement slurry coordinates 1mL distilled water, not only be beneficial to stirring, and the clinker quality coordinating follow-up drying time and calcination time to make to prepare is best.
Cake is tried body size and does greatly by the inventive method, can disposablely be the more test sample of cement slurry burn-ability test acquisition; After but examination body size increases, pressure must be coordinated to suppress the examination body of preparation just can be made in calcination process can not to affect results for calcination.So find through lot of experiments, wet raw materials 60g ± 1g adopts the cake examination body made under the pressure of 1Mpa respond well in the mould of diameter 61mm size, and not only the demoulding is easy, and best to follow-up calcining and other processes.Further, because cake examination body is comparatively large, do a groove at examination body lower surface, will advantageously in ventilation when calcining, make the quality of calcining better.
Burst if the cake examination body after compacting directly easily causes in 950 DEG C of calcinings, may be because raw material are mainly formulated by Wingdale, sandstone, Copper Slag, aluminium ore barren rock, flyash, wherein Wingdale accounts for more than 80%, again because essential mineral is calcium carbonate in Wingdale, temperature is too high, calcium carbonate is heated violent decomposition, easily bursts, and therefore calcining is risen can be solved the problem well from low temperature.
Pre-burning and calcining merging are simplified step by the inventive method, make whole preparation process only need 1 stove, not only save funds; Meanwhile, the examination body of high-temperature calcination is taken out, also there is potential safety hazard in operation.Method of the present invention, without the need to being taken out by the examination body of high-temperature calcination, solves this problem well.
Examination body after calcining takes out and is placed in ventilation by the inventive method immediately, allows it cool fast, not only simulates industrial production to the full extent, but also avoid the slow cooling of grog, ensure that the formation of grog crystal, prevent the formation of secondary ionization calcium.
Embodiment 1
A) take cement slurry 1000g, be placed in clean container, add 200mL distilled water, mix is even obtains wet raw materials;
B) take wet raw materials 60g ± 1g, be placed in forming mould that diameter is 61mm, then adopt the pressure of 1Mpa to make the cake examination body of φ 61*10mm:
C) cake is tried to dry after 2.5 hours in air drying cabinet that body is placed on 105 DEG C, taken out;
D) the cake examination body after process in step c is directly put into High Temperature Furnaces Heating Apparatus, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 20 DEG C/min, at 950 DEG C of temperature, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to 1450 DEG C with the rate of heating of 10 DEG C/min again, at 1450 DEG C of temperature, burn 30min, twice calcining is all carried out in same High Temperature Furnaces Heating Apparatus, without the need to first pre-burning, then puts into High Temperature Furnaces Heating Apparatus calcining:
E) take out from High Temperature Furnaces Heating Apparatus immediately after calcining and be placed in ventilation cooling.
Embodiment 2
A) take cement slurry 1000g, be placed in clean container, add 200mL distilled water, mix is even obtains wet raw materials;
B) take wet raw materials 60g ± 1g, be placed in forming mould that diameter is 61mm, then adopt the pressure of 1Mpa to make the cake examination body of φ 61*10mm:
C) cake is tried to dry after 2.5 hours in air drying cabinet that body is placed on 105 DEG C, taken out;
D) the cake examination body after process in step c is directly put into High Temperature Furnaces Heating Apparatus, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 20 DEG C/min, at 950 DEG C of temperature, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to 1400 DEG C with the rate of heating of 10 DEG C/min again, at 1400 DEG C of temperature, burn 30min, twice calcining is all carried out in same High Temperature Furnaces Heating Apparatus, without the need to first pre-burning, then puts into High Temperature Furnaces Heating Apparatus calcining:
E) take out from High Temperature Furnaces Heating Apparatus immediately after calcining and be placed in ventilation cooling.
Embodiment 3
A) take cement slurry 1000g, be placed in clean container, add 200mL distilled water, mix is even obtains wet raw materials;
B) take wet raw materials 60g ± 1g, be placed in forming mould that diameter is 61mm, then adopt the pressure of 1Mpa to make the cake examination body of φ 61*10mm:
C) cake is tried to dry after 2.5 hours in air drying cabinet that body is placed on 105 DEG C, taken out;
D) the cake examination body after process in step c is directly put into High Temperature Furnaces Heating Apparatus, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 20 DEG C/min, at 950 DEG C of temperature, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to 1350 DEG C with the rate of heating of 10 DEG C/min again, at 1350 DEG C of temperature, burn 30min, twice calcining is all carried out in same High Temperature Furnaces Heating Apparatus, without the need to first pre-burning, then puts into High Temperature Furnaces Heating Apparatus calcining:
E) take out from High Temperature Furnaces Heating Apparatus immediately after calcining and be placed in ventilation cooling.
The raw material index that the embodiment of the present invention and GB/T26566-2011 adopt is as following table 1:
Raw material chemical analysis results is used in table 1 test
The grog prepared by the present embodiment and the standby grog of GB/T26566-2011 " cement slurry burn-ability test method " standard system grind all by 80 μm of testing sieves respectively, carry out chemical analysis according to GB/T 176-2008 " Method for chemical analysis of cement ".Adopt glycide method it to be carried out to the detection of free calcium oxide, concrete outcome is in table 2,3,4.
The table 2 grog Free Calcium content detection result that two kinds of methods are calcined out at 1350 DEG C
| Test number (TN) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| GB/T26566-2011 | 4.50 | 4.51 | 4.55 | 4.51 | 4.50 | 4.49 | 4.54 | 4.52 | 4.53 | 4.58 |
| The inventive method | 4.50 | 4.50 | 4.51 | 4.52 | 4.53 | 4.52 | 4.53 | 4.54 | 4.54 | 4.55 |
| Error | 0.00 | +0.01 | +0.04 | -0.01 | -0.03 | -0.03 | +0.01 | -0.02 | -0.01 | +0.03 |
The table 3 grog Free Calcium content detection result that two kinds of methods are calcined out at 1400 DEG C
| Test number (TN) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| GB/T26566-2011 | 2.26 | 2.28 | 2.25 | 2.27 | 2.26 | 2.25 | 2.28 | 2.28 | 2.27 | 2.26 |
| The inventive method | 2.27 | 2.28 | 2.27 | 2.29 | 2.29 | 2.28 | 2.25 | 2.28 | 2.26 | 2.25 |
| Error | -0.01 | 0.00 | -0.02 | -0.02 | -0.03 | -0.03 | +0.03 | 0.00 | +0.01 | +0.01 |
The table 4 grog Free Calcium content detection result that two kinds of methods are calcined out at 1450 DEG C
| Test number (TN) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| GB/T26566-2011 | 1.53 | 1.54 | 1.57 | 1.50 | 1.55 | 1.56 | 1.54 | 1.55 | 1.52 | 1.54 |
| The inventive method | 1.50 | 1.53 | 1.54 | 1.55 | 1.53 | 1.56 | 1.55 | 1.51 | 1.56 | 1.55 |
| Error | -0.03 | -0.01 | -0.03 | +0.05 | -0.02 | 0.00 | +0.01 | -0.04 | +0.04 | +0.01 |
Table 2, 3, 4 result displays, the grog that two kinds of methods are made, the max value of error of free calcium oxide is 0.05, minimum value is 0.00, according to the repeatability limit of chemical analysis method measurement result in GB/T 176-2008 and the regulation of reproducibility limit, when glycide method mensuration free calcium oxide is content≤2, repeatability limit is 0.10%, be then 0.20% during content > 2, free ca result in the grog that ten samples burn out after the free ca result that three different temperature lower calcinations go out all shows improvement is consistent with the result of the method specified in GB/T26566-2011.
After the analysis of free calcium oxide, by the grog grinding 1450 DEG C of calcinings by 80 μm of testing sieves, carry out chemical analysis detection according to GB/T176-2008 " Method for chemical analysis of cement ", concrete outcome is in table 5.
The chemical analysis results of the grog that table 5 two kinds of methods at 1450 DEG C are calcined out
As seen from Table 5, the chemical composition of the grog adopting the present invention to calcine out is consistent with the chemical composition result of the grog adopting GB/T26566-2011 " cement slurry burn-ability test method " to calcine out.
In summary it can be seen, method of the present invention increases raw material examination body size, coordinates suitable pressure compacting, also assures that the quality of grog while guaranteeing the more test sample of disposable acquisition.In addition, the present invention, by the merging of pre-burning and calcining, greatly simplify test process.The inventive method is not only test and provides sufficient test sample, and make test process simpler, and the simplification of the increase and method that try body size does not have influence on test result, thus for cement slurry burn-ability test grog preparation provide a more efficiently method.
Claims (6)
1. the preparation method of cement slurry burn-ability test grog, is characterized in that: comprise the following steps:
A, cement slurry and distilled water are mixed to obtain wet raw materials, the weight of cement slurry and the volume ratio of distilled water are 5g ︰ 1mL;
B, take wet raw materials 60g ± 1g and be placed in the shaping circular die that diameter is 61mm, adopt the pressure of 1Mpa to be pressed into the cake examination body of φ 61*10mm;
C, cake tried in air drying cabinet that body is positioned over 95 ~ 115 DEG C, dry 2 ~ 3h after, taken out;
D, by after step c process cake examination body directly put into High Temperature Furnaces Heating Apparatus, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 19 ~ 21 DEG C/min, at 950 DEG C, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to test temperature with the rate of heating of 9 ~ 11 DEG C/min again, under test temperature, burn 30min;
Take out from High Temperature Furnaces Heating Apparatus immediately after e, calcining and be placed in ventilation cooling.
2. the preparation method of cement slurry burn-ability test grog according to claim 1, it is characterized in that: in step a, cement slurry is 1000g, and distilled water is 200mL.
3. the preparation method of cement slurry burn-ability test grog according to claim 1, it is characterized in that: in steps d, described test temperature is 1350 DEG C, 1400 DEG C or 1450 DEG C.
4. the preparation method of cement slurry burn-ability test grog according to claim 1, it is characterized in that: in steps d, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 20 DEG C/min, at 950 DEG C, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to test temperature with the rate of heating of 10 DEG C/min again, under test temperature, burn 30min.
5. the preparation method of the cement slurry burn-ability test grog according to claim 3 or 4, it is characterized in that: in steps d, High Temperature Furnaces Heating Apparatus rises to 950 DEG C from lower than 400 DEG C with the rate of heating of 20 DEG C/min, at 950 DEG C, burn 30min; Then this High Temperature Furnaces Heating Apparatus is risen to 1350 DEG C, 1400 DEG C or 1450 DEG C with the rate of heating of 10 DEG C/min again, and burn 30min in this temperature.
6. the preparation method of cement slurry burn-ability test grog according to claim 1, is characterized in that: in step b, and the lower surface of described cake examination body is fluted.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081440A (en) * | 2017-12-21 | 2018-05-29 | 嘉华特种水泥股份有限公司 | A kind of method tested test cake and made |
| CN110926916A (en) * | 2019-11-25 | 2020-03-27 | 中国葛洲坝集团水泥有限公司 | Preparation method of cement raw material burnability test sample |
| CN114279779A (en) * | 2021-12-03 | 2022-04-05 | 北京建筑材料科学研究总院有限公司 | Method for preparing cement clinker test sample in laboratory |
-
2015
- 2015-01-14 CN CN201510018401.4A patent/CN104496233B/en active Active
Non-Patent Citations (4)
| Title |
|---|
| 中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会: "《中华人民共和国国家标准 GB/T26566-2011》", 16 June 2011, article "水泥生料易烧性试验方法", pages: 1-3 * |
| 兰明章: "工业废渣对水泥生料易烧性影响的试验研究", 《水泥CEMENT》, no. 6, 30 June 2004 (2004-06-30), pages 7 - 9 * |
| 赵介山等: "水泥生料易烧性的实验研究与评价", 《水泥工艺设备与自动化》, no. 4, 30 April 1999 (1999-04-30), pages 9 * |
| 邹俊甫: "水泥生料易烧性评价方法的对比", 《山西建材》, no. 1, 31 January 1999 (1999-01-31), pages 33 - 34 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081440A (en) * | 2017-12-21 | 2018-05-29 | 嘉华特种水泥股份有限公司 | A kind of method tested test cake and made |
| CN110926916A (en) * | 2019-11-25 | 2020-03-27 | 中国葛洲坝集团水泥有限公司 | Preparation method of cement raw material burnability test sample |
| CN114279779A (en) * | 2021-12-03 | 2022-04-05 | 北京建筑材料科学研究总院有限公司 | Method for preparing cement clinker test sample in laboratory |
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