CN101844785A - Sintering method of Bayer process red mud burden with low silica alumina ratio - Google Patents
Sintering method of Bayer process red mud burden with low silica alumina ratio Download PDFInfo
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- CN101844785A CN101844785A CN 201010206971 CN201010206971A CN101844785A CN 101844785 A CN101844785 A CN 101844785A CN 201010206971 CN201010206971 CN 201010206971 CN 201010206971 A CN201010206971 A CN 201010206971A CN 101844785 A CN101844785 A CN 101844785A
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- Prior art keywords
- sintering
- red mud
- bayer process
- furnace charge
- process red
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- 238000005245 sintering Methods 0.000 title claims abstract description 46
- 238000004131 Bayer process Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 10
- 238000005303 weighing Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 229910001570 bauxite Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a sintering method of Bayer process red mud burden, in particular to a sintering method of Bayer process red mud burden with low silica alumina ratio. The method is characterized in that when the burden sintering is carried out, grindability sampling determination is carried out on grog after sintering, and the sintering process parameters of the Bayer process red mud burden in the same formula is fed back and regulated according to the grindability sampling determination value to control the quality of the sintering grog. The sintering method of the Bayer process red mud burden aims at the problem that the burden quality of low A/S burden sintering is difficult to control, determines the relative grindability of the sintering burden, is used for regulating and controlling the process parameters of low A/S burden sintering, and effectively ensures the quality of the sintering grog.
Description
Technical field
The furnace charge sintering method of a kind of low alumina silica ratio (A/S) Bayer process red mud relates to a kind of sintering method of low alumina silica ratio Bayer process red mud furnace charge.
Technical background
Along with the high speed development of alumina producing scale, bauxite resource growing tension, low-grade bauxite begin a large amount of uses, and low A/S Bayer process red mud furnace charge sintering supporting technology research is imperative.At present, the complete set technology that industrialization sintering Bayer process red mud furnace charge A/S1.6 is following still is in development.Low A/S Bayer process red mud furnace charge agglomerating difficult point is that sintering range is narrower, and the furnace charge sintering quality is restive.
Summary of the invention
Purpose of the present invention is exactly the deficiency that exists at above-mentioned prior art, provides a kind of energy can effectively control the furnace charge sintering quality, adapts to the low alumina silica ratio Bayer process red mud furnace charge sintering method that the furnace charge sintering range requires.
The objective of the invention is to be achieved through the following technical solutions.
A kind of Bayer process red mud furnace charge sintering method, it is characterized in that when carrying out the furnace charge sintering, the furnace charge behind the sintering is carried out the grindability index sampling judge, judge numerical value according to the grindability index sampling, feedback adjustment prescription Bayer process red mud of the same race furnace charge agglomerating processing parameter is with the quality of control sintered material.
A kind of Bayer process red mud furnace charge sintering method of the present invention, it is characterized in that it is to take by weighing quantitative sintered clinker that grog behind the sintering carries out the method that grindability index judges, after grinding on the vibration mill, carry out the bolting level, residual weight on the sieve calculates residual weight/sintered clinker gross weight on relative grindability index=sieve.
The sintering method of a kind of Bayer process red mud furnace charge of the present invention is characterized in that the grog behind the sintering carries out grindability index decision process employing ZM-1 vibration mill; SDB-200 hits formula standard sieve sieve shaker in the top; Electronic balance, determination step are to claim 50g low alumina silica ratio grog, grind sample sieve shaker vibration separation 15 minutes, weighing 60 on vibration mill 18 seconds
#Residual weight G on the sieve calculates grindability index K=(G/50) * 100
In the formula: K---relative grindability index;
G---residual weight on the 60# sieve.
The sintering method of a kind of Bayer process red mud furnace charge of the present invention is characterized in that the grog behind the sintering is carried out the grindability index sample testing, when the grindability index sampling judges that numerical value K is 21～27, the Bayer process red mud furnace charge agglomerating temperature of prescription of the same race is reduced 20 ℃; Judge that numerical value K is at 17～20 o'clock, the Bayer process red mud furnace charge agglomerating temperature of kind of prescription is reduced 10 ℃.Judge that numerical value K is at 13～16 o'clock, do not adjust; Judge that numerical value K is at 8～12 o'clock, the Bayer process red mud furnace charge agglomerating temperature of prescription of the same race is raised 10 ℃.
The sintering method of a kind of Bayer process red mud furnace charge of the present invention, at the restive problem of low A/S Bayer process red mud furnace charge agglomerating clinker quality, can judge the relative grindability index of sintered clinker, be used to adjust the agglomerating processing parameter of the low A/S Bayer process red mud furnace charge of control, effectively guarantee sintered clinker quality.
Embodiment
A kind of furnace charge sintering method of low alumina silica ratio Bayer process red mud, when carrying out the furnace charge sintering, the grog behind the sintering is carried out the grindability index sampling judge, judge numerical value according to the grindability index sampling, feedback adjustment prescription Bayer process red mud of the same race furnace charge agglomerating processing parameter, the comprising of specific operation process:
Take by weighing quantitatively low alumina silica ratio grog, on vibration mill, grind certain hour, sample sieve shaker vibration separation 15 minutes, weighing 60
#Residual weight on the sieve. more several grogs 60
#Residual weight on the sieve, its relative grindability index of decidable.
Instrument: ZM-1 vibration mill; SDB-200 hits formula standard sieve sieve shaker in the top; Electronic balance
Determination step:
Claim 50g low alumina silica ratio grog, on vibration mill, ground 18 seconds, sample sieve shaker vibration separation 15 minutes, weighing 60
#Residual weight G on the sieve, 60
#Residual weight is heavy more on the sieve, and then the relative grindability index of grog is poor more.
The calculating of grindability index energy relatively
K＝(G/50)×100
In the formula: K---relative grindability index; G---residual weight on the 60# sieve.
Embodiment
| Bayer process red mud furnace charge A/S | The sintering displays temperature (℃) | The sintering temperature adjustment (℃) | Grindability index is judged numerical value K |
| ??1.31 | ??1200 | Raise 10 ℃, for: 1210 | ??8～12 |
| ??1.31 | ??1210 | Do not adjust, still be: 1210 | ??13～16 |
| ??1.31 | ??1220 | Reduce 10 ℃, for: 1210 | ??17～20 |
| ??1.31 | ??1230 | Reduce 20 ℃, for: 1210 | ??21～27 |
| ??1.45 | ??1225 | Raise 10 ℃, for: 1235 | ??8～12 |
| ??1.45 | ??1235 | Do not adjust, still be: 1235 | ??13～16 |
| ??1.45 | ??1245 | Reduce 10 ℃, for: 1235 | ??17～20 |
| ??1.45 | ??1255 | Reduce 20 ℃, for: 1235 | ??21～27 |
| ??1.6 | ??1255 | Raise 10 ℃, for: 1265 | ??8～12 |
| ??1.6 | ??1265 | Do not adjust, still be: 1265 | ??13～16 |
| ??1.6 | ??1275 | Reduce 10 ℃, for: 1265 | ??17～20 |
| ??1.6 | ??1285 | Reduce 20 ℃, for: 1265 | ??21～27 |
Claims (4)
1. Bayer process red mud furnace charge sintering method, it is characterized in that when carrying out the furnace charge sintering, the grog behind the sintering is carried out the grindability index sampling judge, judge numerical value according to the grindability index sampling, feedback adjustment prescription Bayer process red mud of the same race furnace charge agglomerating processing parameter is with the quality of control sintered material.
2. the sintering method of a kind of Bayer process red mud furnace charge according to claim 1, it is characterized in that it is to take by weighing quantitative sintered clinker that grog behind the sintering carries out the method that grindability index judges, after grinding on the vibration mill, carry out the bolting level, residual weight on the sieve calculates residual weight/sintered clinker gross weight on relative grindability index=sieve.
3. the sintering method of a kind of Bayer process red mud furnace charge according to claim 1 is characterized in that the grog behind the sintering carries out grindability index decision process employing ZM-1 vibration mill; SDB-200 hits formula standard sieve sieve shaker in the top; Electronic balance, determination step are to claim 50g low alumina silica ratio grog, grind sample sieve shaker vibration separation 15 minutes, weighing 60 on vibration mill 18 seconds
#Residual weight G on the sieve calculates grindability index K=(G/50) * 100
In the formula: K---relative grindability index;
G---60
#Residual weight on the sieve.
4. a kind of Bayer process red mud furnace charge sintering method according to claim 1, it is characterized in that adjustment to the furnace charge process agglomerating temperature parameter behind the sintering, when the grindability index sampling judges that numerical value K is 21～27, the Bayer process red mud furnace charge agglomerating temperature of prescription of the same race is reduced 20 ℃; Judge that numerical value K is at 17～20 o'clock, the Bayer process red mud furnace charge agglomerating temperature of kind of prescription is reduced 10 ℃; Judge that numerical value K is at 13～16 o'clock, do not adjust.Judge that numerical value K is at 8～12 o'clock, the Bayer process red mud furnace charge agglomerating temperature of prescription of the same race is raised 10 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010206971 CN101844785A (en) | 2010-06-13 | 2010-06-13 | Sintering method of Bayer process red mud burden with low silica alumina ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010206971 CN101844785A (en) | 2010-06-13 | 2010-06-13 | Sintering method of Bayer process red mud burden with low silica alumina ratio |
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| CN101844785A true CN101844785A (en) | 2010-09-29 |
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| CN 201010206971 Pending CN101844785A (en) | 2010-06-13 | 2010-06-13 | Sintering method of Bayer process red mud burden with low silica alumina ratio |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108254216A (en) * | 2018-03-15 | 2018-07-06 | 攀钢集团西昌钢钒有限公司 | Mineral aggregate sampling method, device and the readable storage medium storing program for executing of a kind of blast furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS523596A (en) * | 1975-06-28 | 1977-01-12 | Nippon Light Metal Co Ltd | Production of granular red mud |
| CN1772617A (en) * | 2005-09-28 | 2006-05-17 | 中国铝业股份有限公司 | Sintering process of separating red mud for alumina production |
| CN101070172A (en) * | 2007-05-31 | 2007-11-14 | 中国铝业股份有限公司 | Improved series method for producing aluminium oxide |
-
2010
- 2010-06-13 CN CN 201010206971 patent/CN101844785A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS523596A (en) * | 1975-06-28 | 1977-01-12 | Nippon Light Metal Co Ltd | Production of granular red mud |
| CN1772617A (en) * | 2005-09-28 | 2006-05-17 | 中国铝业股份有限公司 | Sintering process of separating red mud for alumina production |
| CN101070172A (en) * | 2007-05-31 | 2007-11-14 | 中国铝业股份有限公司 | Improved series method for producing aluminium oxide |
Non-Patent Citations (2)
| Title |
|---|
| 《轻金属》 19991231 刘文义等 拜耳法赤泥生料烧结工艺的研究 第19-23页 1-4 , 第11期 2 * |
| 《轻金属》 19991231 廖新秦等 低A/S赤泥炉料烧结的可行性探讨 第20-23页 1-4 , 第7期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108254216A (en) * | 2018-03-15 | 2018-07-06 | 攀钢集团西昌钢钒有限公司 | Mineral aggregate sampling method, device and the readable storage medium storing program for executing of a kind of blast furnace |
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Application publication date: 20100929 |