CN101012498A - Method for producing high alumina refined powder by using alumyte - Google Patents
Method for producing high alumina refined powder by using alumyte Download PDFInfo
- Publication number
- CN101012498A CN101012498A CN 200710077645 CN200710077645A CN101012498A CN 101012498 A CN101012498 A CN 101012498A CN 200710077645 CN200710077645 CN 200710077645 CN 200710077645 A CN200710077645 A CN 200710077645A CN 101012498 A CN101012498 A CN 101012498A
- Authority
- CN
- China
- Prior art keywords
- ripe
- bauxite
- fine
- fine fodder
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a manufacturing method of bauxite chamotte powder through bauxite, which comprises the following steps: 1. breaking; washing mud; removing sand in the bauxite; improving Al-Si rate; 2. refining; grinding; sieving; removing impurity; removing ilmenite in the two-grade high-gradient strong magnetic floating machine; obtaining floated fined material; 3. sintering bauxite powder into bauxite chamotte powder; cooling; 4. grinding; obtaining the product.
Description
Technical field
The present invention relates to the pre-treatment of raw materials for metallurgy, in particular to the pre-treatment of bauxite; Furthermore, relate to the method for producing the ripe smart powder of alumine with bauxite.
Technical background
The ripe powder of alumine is an intermediate raw material of producing products such as petroleum fracturing propping agent, alumina-ceramic, corundum, high alumina refractory.The ripe powder of alumine is made by high bauxite clinker powder is broken, levigate, and bauxite chamotte is a raw material with bauxite normally, obtains in the high-temperature calcination more than 1400 ℃ in shaft kiln after artificial selection.The mineral of bauxite chamotte mainly be corundum, mullite and glassy phase (Xu Pingkun, Dong Yingbang writes. corundum refractory [M]. Beijing: metallurgical industry press, 1999:11).The corundum of one of bauxite chamotte essential mineral that high-temperature calcination is produced, hardness is very high, its " work index " (promptly from granularity very big be crushed to granularity and be 100 μ m the time, the energy that the per unit weight material is consumed) up to 58.18, being the highest in all mineral, is 6.16 times of (Wang Dian assistant, Lu Xiaoci of bauxite, Deng. mineral add engineering [M]. Xuzhou: and press of China Mining University, 2003:82-83).As seen the bauxite chamotte with produced in conventional processes is difficult to be finely ground to powder.
The alumina silica ratio of bauxite is an important indicator of weighing its quality, and in general, alumina silica ratio is high more, illustrates that wherein alumina content is many more, and its quality is good more.Make raw material with bauxite, according to the difference of production purpose product, also different to the alumina silica ratio requirement of bauxite.But the alumina silica ratio that improves bauxite is each technology common requirement, for this reason, people take usually to bauxite manually choose, measures such as flush away silt and flotation to be to improve alumina silica ratio.But these measures can not be removed impurity such as titanium in the bauxite, iron, and they are to producing the deleterious impurity of quality product such as petroleum fracturing propping agent.
Chinese patent application part No. 93111983.9 " manufacture method of high-strength alumina supporting agent " discloses the manufacture method of the high-strength alumina supporting agent that a kind of well fracturing technology uses, this method adopts traditional production technique, still exists the bauxitic clay grog to be difficult to shortcoming levigate, that can not remove titanium, iron contamination.Up to now, also be not that the ripe smart powder of alumine that raw material is made comes out with bauxite.
Summary of the invention
The object of the present invention is to provide a kind of method of producing the ripe smart powder of alumine with bauxite, present method can not only be made raw material with high-quality bauxite, can also make raw material with bauxite inferior, and can reduce production energy consumption, improve productive rate, reduce cost, make high-quality ripe smart powder.
The contriver recognizes in studying for a long period of time and putting into practice: because the minerogentic condition difference uses the processing condition of the ripe smart powder of bauxite production alumine in the different places of production to be not quite similar.Therefore,, should carry out process mineralogy research earlier, the comprehensive evaluation of science is carried out in the mineral deposit, physics, the chemical property of ore and mineral be studied, for selecting and determining that best pretreating scheme provides reliable foundation for the pre-treatment of bauxite.
To achieve the above object of the invention, the method with the ripe smart powder of bauxite production alumine that the contriver provides is a kind of principle process, and this method comprises following operation:
1. mud is washed in fragmentation
The effect of this operation is the silt of removing in the bauxite, improves alumina silica ratio.Specific practice be with the bauxite coarse crushing to particle diameter below 100mm, water flush away silt in washing the mud machine cleans up with clear water more then; Then adopt artificial selection removal of impurities, in small, broken bits to particle diameter 10mm.
This operation reply washing water are handled, and realize closed circulation, reduce and pollute.
The contriver points out: whether need to wash mud, decide according to the character of bauxite.
2. unite selected
The effect of this operation is by fine grinding and screening, in secondary high-gradient intensity magnetic separator, remove the impure mineral that contains ferrotianium (the Xie Guangyuan chief editor. mineral dressing [M]. Xuzhou: press of China Mining University, 2001:363 page or leaf), improve mineral quality, obtain fine fodder.Specific practice is the bauxite below the particle diameter 10mm that will go behind the silt, in primary ball mill about wet grinding mill to 150 order, classified then machine classification, that tells roughly returns ball mill circulation and regrinds, and fine granules then is made into ore pulp with water, by first step high-gradient intensity magnetic separator (Wang Jiangang, Deng. IRON ORE technology and economical [M]. Beijing: metallurgical industry press, 1992:226-235), the ferruginous mineral of most of titaniferous are selected, and become the mine tailing that contains ferrotianium; The ore pulp of removing ferrotianium sorts through the first step and the second stage fine ga(u)ge screen extension set that is provided with continuously, select fine granules; The Coarse Aggregate that tails over enters regrind mill, is milled to-200 orders, and the third stage and the fourth stage fine ga(u)ge screen extension set that enter continuous setting then sort, and obtain fine granules; Because the particle diameter of siliceous mineral is greater than the particle diameter of pure alumina mineral, so the compass screen surface thing is siliceous mine tailing.Merge the about 90%-325 purpose fine granules that sift out at different levels, send into second stage high-gradient intensity magnetic separator, further remove the ferruginous dirt of titaniferous, these impurity are incorporated the mine tailing that contains ferrotianium into.Resulting wet fine fodder obtains the wet smart powder of bauxite through dehydration, filtration; Oven dry promptly obtains the alum clay tantalite power.
If with secondary high-gradient intensity magnetic separator select wet fine fodder send to flotation workshop section, can further remove siliceous, iron content, titaniferous mineral, through dehydration, filter, can make the wet smart powder in high purity alum clay ore deposit, and then can be made into the ripe smart powder in high purity alum clay ore deposit.
The dehydration of this operation, filtering filtrate are returned to primary ball mill and are used as interpolation water or are used for joining ore pulp, to reduce the clear water consumption.
The contriver points out: the wet fine fodder of this operation need not oven dry through the wet smart powder in the high purity alum clay ore deposit that dehydration, filtration obtain and can pack, as the raw material of manufacture aluminum oxide, have than direct and make the advantage that the raw material production commercial alumina is economized energy, reduction alkaline consumption, improved productive rate with high-quality bauxite.
3. calcining is shaped
The effect of this operation is that the alum clay tantalite power is sintered into the alumine fine fodder.Specific practice is the alum clay tantalite power that last operation makes to be made ball or is pressed into piece calcine in rotary kiln, promptly obtains ripe fine fodder.Calcining temperature can be determined according to the editing objective product of ripe fine fodder.If ripe fine fodder is used to produce petroleum fracturing propping agent, then adopt not to be higher than 800 ℃ middle temperature calcining, and should use rotary kiln, because can stopping up air flue, vertical furnace powder under middle temperature calcination condition makes the operating mode severe exacerbation; Ripe fine fodder α-Al that middle temperature calcining makes
2O
3Crystal remains on corundum false appearance state, its Mohs' hardness about 7.5; This ripe fine fodder is when producing propping agent, and the homogenizing fine grinding after the batching is corundum α-Al of 9 than Mohs' hardness
2O
3Easily, and economize can; In warm incinerating energy consumption also low.If ripe fine fodder is used to produce alumina-ceramic, then adopt 1420～1450 ℃ high-temperature calcination, the ripe fine fodder α-Al that obtains
2O
3Can all change into corundum, the liquid phase that wherein also has mullite and low melting point mineral exists, and has the coexistence of ball powder after the cooling.Material after the calcining enters air conditioner and cools off with the ripe fine fodder of air to heat, is cooled to the temperature of processing requirement.The warm air of cooler outlet is used for burning gas or coal dust, has both cooled off ripe fine fodder, has reclaimed heat again, can improve the consumption of fuel gas temperature, minimizing coal gas or coal dust.
Being used for incinerating fuel can be a kind of of heavy oil, Sweet natural gas, coke-oven gas, water-gas or producer gas, also can be coal dust.Wherein, the producer gas calorific value is low, temperature calcining in being only applicable to; Other fuel can be used for high-temperature calcination, but grey branch increases impurity in the ripe fine fodder behind the coal dust firing.Reasonable fuel is water-gas, and its temperature of combustion is the highest, also adjusts easily.
The outlet flue gas of this operation calcining kiln is as the thermal source of the wet smart powder of last operation oven dry bauxite, to cut down the consumption of energy; The flue gas that the wet smart powder of bauxite produces when drying must both reclaim the alum clay tantalite power by dedusting and dust arrester installation, reduces the quantity discharged of flue dust again.
4. abrasive dust
The effect of this operation is that the ripe fine fodder that last operation obtains is finely ground to the ripe smart powder of alumine.Specific practice is that the cooled ripe fine fodder that last operation makes is sent into dry grinder, carries out ball milling with the corundum ball, obtains the ripe smart powder of-325 purpose alumines.
Calcining kiln in above-mentioned each operation, dryer, cooler expellant gas had both reduced dust pollution all by dedusting and dust arrester installation, increased the ripe smart powder yield of alumine again.
Adopt method of producing the ripe smart powder of alumine with bauxite of the present invention, compared with the prior art, present method can be with high-quality bauxite, also can make raw material production titaniferous, iron content, the ripe smart powder of highly purified alumine that siliceous impurity is low with bauxite inferior, can reduce production energy consumption, improves productive rate, reduce cost; The ripe smart powder that the temperature calcining makes in the process is used for producing petroleum fracturing propping agent, the advantage that have easy mill, economize energy, cost is low; The ripe smart powder that makes through high-temperature calcination is used for producing alumina-ceramic and corundum material, can be used to replace commercial alumina to participate in batching directly.
Description of drawings
Accompanying drawing is the selected principle process synoptic diagram of bauxite.
Embodiment
Embodiment 1 produces the ripe smart powder of alumine that is used as the petroleum fracturing propping agent raw material by following operation:
1. bricklayer's preface is washed in fragmentation: with the mining jaw crusher coarse crushing of high-quality alum clay to particle diameter below 100mm, wash water flush away silt in the mud machine at spiral then, clean up with clear water again; Then adopt artificial selection removal of impurities, in small, broken bits to particle diameter 10mm with impact breaker;
2. unite selected operation: will remove the following bauxite of particle diameter 10mm behind the silt, in with the primary ball mill in 2-3 storehouse about wet grinding mill to 150 order, then through the classification of waterpower screw classifier, that tells roughly returns primary ball mill circulation and regrinds, fine granules then is made into ore pulp with water, by first step GTC-1 type high-gradient intensity magnetic separator, the ferruginous mineral of the titaniferous of selecting are the mine tailing that contains ferrotianium; The ore pulp of removing ferrotianium sorts through the first step and the second stage GPS type high frequency fine ga(u)ge screen extension set that is provided with continuously, and this dusting cover sieve diameter is 0.1mm, particle separation diameter 44 μ m, select fine granules; The Coarse Aggregate of compass screen surface enters the regrind mill in 3-4 storehouse, is milled to-200 orders, and the third stage and the fourth stage GPS type high frequency fine screen that enter continuous setting then sort, and obtain fine granules; The compass screen surface thing is siliceous mine tailing; Merge the about 90%-325 purpose fine granules that sift out at different levels, send into second stage GTC-1 type high-gradient intensity magnetic separator, further remove the ferruginous dirt of titaniferous; By flotation, the wet fine fodder that obtains obtains the wet smart powder of bauxite through dehydration, filtration, Tumblies Dry and promptly obtains the alum clay tantalite power again;
3. calcination process is shaped: will go up alum clay tantalite power that operation makes and make the bead of φ 5～10mm with pan-pelletizer, and adopt the middle temperature that is not higher than 800 ℃ to calcine afterwards in the rotary kiln of φ 2m * 40m and obtain ripe fine fodder; Then ripe fine fodder is sent into cooler, cool off with the ripe fine fodder of air to heat, cooled ripe fine fodder is sent into wrapping machine, just obtains the ripe smart powder of alumine.
4. abrasive dust operation:, do not have hard spheroid, so material need not abrasive dust owing to do not have melts in the material of middle temperature after calcining.Produce the ripe fine fodder that propping agent is made raw material for supply, in batching precision grinding process thereafter, can reach processing requirement.
Embodiment 2 produces the ripe smart powder of alumine that is used as the alumina-ceramic raw material by following operation:
1. bricklayer's preface is washed in fragmentation: with bauxite inferior with the jaw crusher coarse crushing to particle diameter below 100mm, wash in the mud machine water flushing at spiral then and remove silt, clean up with clear water again; Then adopt artificial selection removal of impurities, in small, broken bits to particle diameter 10mm with impact breaker;
2. unite selected operation: with embodiment 1;
3. calcination process is shaped: will go up alum clay tantalite power that operation makes and be pressed into piece and adopt 1420～1450 ℃ high-temperature calcination to obtain ripe fine fodder in the rotary kiln of φ 2m * 60m, and then ripe fine fodder be sent into cooler, and cool off with the ripe fine fodder of air to heat;
4. abrasive dust operation: cooled ripe fine fodder is sent into dry grinder, carries out ball milling with the corundum ball, obtains the ripe smart powder of-325 purpose alumines.
Embodiment 3 produces the alum clay tantalite power that is used as the commercial alumina raw material by following operation:
1. bricklayer's preface is washed in fragmentation: with embodiment 2;
2. unite selected operation: will remove the following bauxite of particle diameter 10mm behind the silt, in with the primary ball mill in 2-3 storehouse about wet grinding mill to 150 order, then through the classification of waterpower screw classifier, that tells roughly returns primary ball mill circulation and regrinds, fine granules then is made into ore pulp with water, by first step GTC-1 type high-gradient intensity magnetic separator, the ferruginous mineral of the titaniferous of selecting are the mine tailing that contains ferrotianium; The ore pulp of removing ferrotianium sorts through the first step and the second stage GPS type high frequency fine ga(u)ge screen extension set that is provided with continuously, and this dusting cover sieve diameter is 0.1mm, particle separation diameter 44 μ m, select fine granules; The Coarse Aggregate of compass screen surface enters the regrind mill in 3-4 storehouse, is milled to-200 orders, and the third stage and the fourth stage GPS type high frequency fine screen that enter continuous setting then sort, and obtain fine granules; The compass screen surface thing is siliceous mine tailing; Merge the about 90%-325 purpose fine granules that sift out at different levels, send into second stage GTC-1 type high-gradient intensity magnetic separator, further remove the ferruginous dirt of titaniferous; The wet fine fodder that obtains by flotation promptly obtains the wet smart powder of bauxite through dehydration, filtration again, and the packing back directly supplies commercial alumina production to make raw material.
Claims (6)
1 usefulness bauxite is produced the method for the ripe smart powder of alumine, and mud is washed in traditional fragmentation to this method except having, calcining and the abrasive dust operation of being shaped and, it is characterized in that this method has also increased to unite selected operation, and the specific practice of each operation is:
1. fragmentation wash mud be with the bauxite coarse crushing to particle diameter below 100mm, water flush away silt in washing the mud machine cleans up with clear water more then; Then adopt artificial selection removal of impurities, in small, broken bits to particle diameter 10mm;
2. uniting selected is bauxite below the particle diameter 10mm that will go behind the silt, in primary ball mill about wet grinding mill to 150 order, classified then machine classification, that tells roughly returns primary ball mill circulation and regrinds, fine granules then is made into ore pulp with water, by first step high-gradient intensity magnetic separator, the ferruginous mineral of the titaniferous of selecting are the mine tailing that contains ferrotianium; The ore pulp of removing ferrotianium sorts through the first step and the second stage fine ga(u)ge screen extension set that is provided with continuously, select fine granules; The Coarse Aggregate that tails over enters regrind mill, is milled to-200 orders, and the third stage and the fourth stage fine ga(u)ge screen extension set that enter continuous setting then sort, and obtain fine granules; The compass screen surface thing is siliceous mine tailing; Merge the about 90%-325 purpose fine granules that sift out at different levels, send into second stage high-gradient intensity magnetic separator, further remove the ferruginous dirt of titaniferous; By flotation, resulting wet fine fodder obtains the wet smart powder in high purity alum clay ore deposit through dehydration, filtration, Tumblies Dry and promptly obtains the alum clay tantalite power again; Or do not dry direct packing as the raw material of manufacture aluminum oxide;
3. the calcining that is shaped is the alum clay tantalite power that last operation makes to be made ball or is pressed into piece calcine in calcining kiln, promptly obtains ripe fine fodder; Employing is lower than 800 ℃ middle temperature calcining, or adopts 1420～1450 ℃ high-temperature calcination, the ripe fine fodder that obtains; Then ripe fine fodder is sent into cooler, cool off with the ripe fine fodder of air to heat;
4. abrasive dust is that cooled ripe fine fodder is sent into dry grinder, carries out ball milling with the corundum ball, obtains the ripe smart powder of-325 purpose alumines.
2 in accordance with the method for claim 1, it is characterized in that in the selected operation of described associating that dehydration, filtering filtrate are returned to be used as to the primary ball mill to add water or be used for joining ore pulp.
3 in accordance with the method for claim 1, it is characterized in that in the described shaping calcination process, adopts the ripe fine fodder of middle temperature incinerating that is lower than 800 ℃ to be applicable to the production petroleum fracturing propping agent; Adopt the ripe fine fodder of 1420～1450 ℃ high-temperature calcination to be applicable to production alumina-ceramic or corundum material.
4 in accordance with the method for claim 1, it is characterized in that being used for incinerating fuel in the described shaping calcination process is a kind of of heavy oil, Sweet natural gas, coke-oven gas, water-gas or producer gas, or coal dust.
5 in accordance with the method for claim 1, the warm air that it is characterized in that the outlet of described cooler be used for burning coal gas or coal dust.
6 in accordance with the method for claim 1, it is characterized in that described dryer, calcining kiln, cooler expellant gas are all by dedusting and dust arrester installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710077645A CN100591780C (en) | 2007-02-12 | 2007-02-12 | Method for producing high alumina refined powder by using alumyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710077645A CN100591780C (en) | 2007-02-12 | 2007-02-12 | Method for producing high alumina refined powder by using alumyte |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101012498A true CN101012498A (en) | 2007-08-08 |
| CN100591780C CN100591780C (en) | 2010-02-24 |
Family
ID=38700225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710077645A Expired - Fee Related CN100591780C (en) | 2007-02-12 | 2007-02-12 | Method for producing high alumina refined powder by using alumyte |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100591780C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885616A (en) * | 2010-06-28 | 2010-11-17 | 张军 | Method for preparing bauxite secondary homogenizing material |
| CN101302020B (en) * | 2008-06-26 | 2010-11-24 | 贵州大学 | High-sulphur alumyte desulfuration method |
| CN102583470A (en) * | 2012-03-15 | 2012-07-18 | 龚亚云 | Preparation method of homogeneous bauxite applicable to smelting of brown fused alumina |
| CN102942368A (en) * | 2012-11-29 | 2013-02-27 | 昆明冶金研究院 | Method for preparing high-strength petroleum fracturing propping agent from low-grade bauxite |
| CN103691549A (en) * | 2013-12-16 | 2014-04-02 | 裴寿益 | Beneficiation method |
| CN103949322A (en) * | 2014-05-14 | 2014-07-30 | 中材（天津）粉体技术装备有限公司 | Nickel slag grinding system and production process thereof |
| CN104399576A (en) * | 2014-11-03 | 2015-03-11 | 云南铜业（集团）钛业有限公司 | Titanium placer mineral processing and tailing fast reclamation method |
| CN104815752A (en) * | 2015-05-21 | 2015-08-05 | 张敬伟 | Method for separating magnetic substances in waste ash residue of thermal power plant |
| CN108439443A (en) * | 2018-03-29 | 2018-08-24 | 贵州遵义金山磨料有限公司 | A kind of method that Brown Alundum production is homogenized with bauxite ore |
| CN113953068A (en) * | 2021-10-25 | 2022-01-21 | 中国铝业股份有限公司 | Method for removing impurities and improving quality of gibbsite type high-iron bauxite in original place |
| CN114377847A (en) * | 2021-12-07 | 2022-04-22 | 湖南金业环保科技有限公司 | Industrial smelting waste residue recovery flotation process |
-
2007
- 2007-02-12 CN CN200710077645A patent/CN100591780C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302020B (en) * | 2008-06-26 | 2010-11-24 | 贵州大学 | High-sulphur alumyte desulfuration method |
| CN101885616A (en) * | 2010-06-28 | 2010-11-17 | 张军 | Method for preparing bauxite secondary homogenizing material |
| CN102583470A (en) * | 2012-03-15 | 2012-07-18 | 龚亚云 | Preparation method of homogeneous bauxite applicable to smelting of brown fused alumina |
| CN102583470B (en) * | 2012-03-15 | 2014-03-19 | 龚亚云 | Preparation method of homogeneous bauxite applicable to smelting of brown fused alumina |
| CN102942368A (en) * | 2012-11-29 | 2013-02-27 | 昆明冶金研究院 | Method for preparing high-strength petroleum fracturing propping agent from low-grade bauxite |
| CN103691549A (en) * | 2013-12-16 | 2014-04-02 | 裴寿益 | Beneficiation method |
| CN103949322A (en) * | 2014-05-14 | 2014-07-30 | 中材（天津）粉体技术装备有限公司 | Nickel slag grinding system and production process thereof |
| CN104399576A (en) * | 2014-11-03 | 2015-03-11 | 云南铜业（集团）钛业有限公司 | Titanium placer mineral processing and tailing fast reclamation method |
| CN104815752A (en) * | 2015-05-21 | 2015-08-05 | 张敬伟 | Method for separating magnetic substances in waste ash residue of thermal power plant |
| CN108439443A (en) * | 2018-03-29 | 2018-08-24 | 贵州遵义金山磨料有限公司 | A kind of method that Brown Alundum production is homogenized with bauxite ore |
| CN113953068A (en) * | 2021-10-25 | 2022-01-21 | 中国铝业股份有限公司 | Method for removing impurities and improving quality of gibbsite type high-iron bauxite in original place |
| CN114377847A (en) * | 2021-12-07 | 2022-04-22 | 湖南金业环保科技有限公司 | Industrial smelting waste residue recovery flotation process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100591780C (en) | 2010-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100591780C (en) | Method for producing high alumina refined powder by using alumyte | |
| CN102189037B (en) | Impurity removal process for quartz sand | |
| CN104446022B (en) | A kind of prepared from steel slag is for the method for Steel-slag Sand, activation ground-slag and RO phase | |
| CN101417260B (en) | High iron bauxite dressing method | |
| CN109365106A (en) | A kind of stainless steel slag dry type magnetic separation device and technique | |
| CN101269946A (en) | Calcination kleit preparing method | |
| CN108325738B (en) | Step recovery method for metal aluminum in aluminum ash | |
| CN110328047B (en) | Method for preparing ceramic raw material from granite stone sawn mud stone powder | |
| CN106927699A (en) | A kind of method that utilization carbide slag prepares calcium carbide lime | |
| CN101491789A (en) | Beneficiation process of mixed dregs using three copper smelting methods of flash smelting furnace, revolving furnace and depletion electric furnace | |
| CN105859307A (en) | Method for processing and recovering carboniferous waste fireproof materials | |
| CN104508151A (en) | Method for producing metallic iron | |
| CN207307940U (en) | A kind of mullite raw material crushes removal of impurities lapping device | |
| CN111253093A (en) | Cementing material containing coal-to-liquid coarse slag and preparation method thereof | |
| CN102101068A (en) | Bauxite high-pressure roll-milling ultrafine grinding method | |
| CN101693217A (en) | System and method for grinding bauxite by dry method | |
| CN103601388A (en) | Process for producing gravel or sand for construction from high titania bearing blast furnace slag | |
| CN109665529A (en) | A kind of production method for the glass sand not generating quartz tail sand | |
| CN103276202A (en) | Metal grained iron and aluminium oxide production method by utilization of high-ferro bauxite | |
| CN101658854B (en) | Method for preparing high-performance concrete additive by using steel slag ball-milling waste residue | |
| CN109354482A (en) | A kind of comprehensive utilization process of marble type middle-low grade wollastonite mine | |
| Jensen et al. | Influence of quartz particles on wear in vertical roller mills. Part I: Quartz concentration | |
| CN101602027A (en) | The kaolinic technology of the high mountain range of a kind of usefulness calcination of minerals | |
| CN1915527A (en) | Ore dressing technique for asbestos integrated procedures of drying, crashing, tearing off asbestos, and classifying | |
| CN102492851A (en) | Method for smelting and extracting zinc tailings by recovery method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20130212 |