CN101912811A - Method for preparing nepheline syenite powder - Google Patents
Method for preparing nepheline syenite powder Download PDFInfo
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- CN101912811A CN101912811A CN 201010229489 CN201010229489A CN101912811A CN 101912811 A CN101912811 A CN 101912811A CN 201010229489 CN201010229489 CN 201010229489 CN 201010229489 A CN201010229489 A CN 201010229489A CN 101912811 A CN101912811 A CN 101912811A
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- nepheline syenite
- flotation
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- syenite powder
- mica
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Abstract
The invention relates to a method for preparing nepheline syenite powder. The method comprises the following steps of: elutriating and washing raw materials; smashing ores; performing graded screening; performing ball milling and fine crushing; removing impurities and filtering; and dewatering and drying, wherein the impurity-removing and filtering step comprises a flotation procedure for removing mica in the nepheline syenite. A two-stage closed-loop wet grinding process, a flotation process and a magnetic separation and impurity removing process are adopted by the method, so that impurities such as the mica and the like can be removed basically and a contradiction between purification and super small product particle size is solved. Material smashing and grinding are performed by using a closed-loop system, so that power consumption is lowered to the maximum extent and the reasonable distribution of the product particle size is ensured simultaneously. A new high-purity nepheline syenite material which hardly contains any mica impurity and is prepared by the method has TiO2 content of lower than 0.01 percent and Fe2O3 content of lower than 0.10 percent and meets the requirements of functional ceramics and structural ceramics.
Description
Technical field
The present invention relates to a kind of method for preparing nepheline syenite powder, especially relate to a kind of process for preparing the ultra tiny granularity powder of nepheline syenite.
Background technology
Nepheline syenite is good ceramic raw material, and the nepheline syenite of domestic processing in the past can not be used to make structural ceramics and function ceramics because technical indicators such as its purity, granularity and grain shape do not reach requirement, only is used for conventional ceramic.Particularly nepheline syenite generally has iron, Ti content is higher, contains shortcomings such as mica impurity.Traditional purifying technique only is to adopt magnetic separator to remove irony and other magnetisable material.And mica is to be difficult to magnetized impurity, and magnetic separator is difficult to remove the mica in the nepheline syenite.Just contain ferro element in this body structure of mica, cause the Fe in the nepheline syenite product
2O
3Content can only be applied in traditional conventional ceramic (domestic ceramics and architectural pottery) industry generally greater than 0.15%.
In addition, present domestic preparation ultrafine powder, most of impacting type dry pulverization process machine or ring roll-type Raymond machine of adopting, grain shape mostly is the angular irregular particle greatly, and the irony of sneaking into is more.In structural ceramics and function ceramics, make the material of mineralizer, it preferably all is spheroidal that its grain shape requires, because the firing temperature of this class pottery is generally higher, require mineralizer (also having the flux effect) can be under higher temperature just to form glassy phase with on every side substance reaction.Be nepheline syenite equally, the angular irregular particle will glassy phase occur ahead of time than spheroidal particle, can influence the densified of product prematurely with unsintered duct gambling plug.
Summary of the invention
In order to overcome the weak point of the prior art of above-mentioned indication, the invention provides a kind of method for preparing nepheline syenite powder, can be used to make structural ceramics and function ceramics with preparation, technical indicators such as its purity, granularity and grain shape meet the requirements of the ultra tiny granularity powder of nepheline syenite.
The present invention is achieved by the following technical solutions: a kind of method for preparing nepheline syenite powder, and the step of described method comprises:
(a) eluriate raw material, prepare burden according to product requirement;
(b) adopt the crusher in crushing ore, and by vibratory sieve to stock grading;
(c) material is after the dry type deironing, be delivered to the one-level ball mill and implement wet grinding, and by cyclone to stock grading;
(d) material enters flotation device and implements the flotation operation, to remove the mica in the nepheline syenite; Remove irony and other magnetisable material by magnetic separator;
(e) mass transport is implemented wet grinding once more to the secondary ball mill; And material is carried out classification by grader;
(f) dehydrate, form powder.
Described flotation operation adopts reverse flotation method, and the emersion thing is an impurity, and sediment is a product.Described flotation operation adopts primary amine salt, sodium metasilicate, three kinds of medicaments of sodium carbonate, and the weight ratio of three kinds of medicaments is followed successively by (2.5-3.5): 1: 1, the consumption summation of three kinds of medicaments was the 0.3%-0.8% of flotation weight of material.The floatation concentration of described flotation material is controlled in the 10%-25%.This method has adopted secondary wet grinding technology, and material carries out flotation, magnetic separation behind the one-level ball milling, enters secondary ball milling operation thereafter.Behind the one-level ball milling, the specific gravity control of the material of granularity in the 10-100 mu m range is controlled the flotation granularity more than 90% with this.The material fragmentation and the ball milling of described method all adopt closed-circuit system, by classifying equipoment certified products are selected and are entered subsequent processing, and defective work returns an operation.Described method adopts the ball mill of corundum ball, corundum lining that mineral are ground.Described material is implemented the homogenizing mixing before entering ball mill grinding.
The present invention is according to the requirement of function ceramics to the high-performance raw material, ad hoc one flotation operation, adopted secondary wet grinding technology to add flotation, magnetic separation impurity removal process, flotation can be removed impurity such as mica substantially, also remove simultaneously part iron, alleviate the pressure of magnetic separation, solved the ultra-fine contradiction of purification and product granularity.Adopt the ball mill ore grinding, based on grinding, particularly adopt corundum ball, corundum lining, guarantee that not only grinding process do not sneak into irony, and because corundum proportion is relatively little, cause the deformation process relative velocity of material slow, change even, smooth surface, output powder shape improves the compactness of product based on the approximate circle sphere.In addition, closed-circuit system is all adopted in broken, grinding, has guaranteed reasonable distribution when having reduced power consumption to greatest extent, satisfies the requirement of function ceramics structural ceramics.
The high-purity nepheline syenite new material that the mica impurity content that utilizes the present invention to prepare is extremely low, wherein TiO
2Content≤0.01%, Fe
2O
3Content≤0.10%, through after the pilot scale at home first Application in structural ceramics and function ceramics, be domestic unique high-purity nepheline syenite powder new material that can be used for function ceramics at present, admitted by structural ceramics and function ceramics industry and adopt.
Description of drawings
Accompanying drawing 1 is the process flow diagram of the embodiment of the invention.
The specific embodiment
For the ease of those skilled in the art's understanding, the invention will be further described below in conjunction with accompanying drawing.
A kind of method for preparing nepheline syenite powder, the flow process of described method comprises eluriates that raw material, breaking ores, sizing screening, ball milling are in small, broken bits, removal of impurities is filtered, dehydrated, described removal of impurities is filtered and is comprised the flotation operation in this program, to remove the mica in the nepheline syenite.Described flotation operation adopts primary amine salt, sodium metasilicate, three kinds of medicaments of sodium carbonate, and the weight ratio of described three kinds of medicaments is followed successively by (2.5-3.5): 1: 1, the consumption summation of three kinds of medicaments was the 0.3%-0.8% of flotation weight of material.Consumption according to the actual conditions floating agent can be done suitable adjustment.Guarantee the magnetic separation effect in the time of for the assurance flotation effect, the floatation concentration of described flotation material is controlled in the 10%-25%.Described flotation operation adopts reverse flotation method, and the emersion thing is an impurity, and sediment is a product.
As shown in Figure 1, the concrete steps of the technological process of present embodiment are as follows:
Step 01: select the washup thing, prepare burden according to product requirement;
Step 02: adopt the jaw crusher break mined material;
Step 03: adopt the impact breaker break mined material;
Step 04: to stock grading, granularity is returned impact breaker continuation fragmentation greater than the material of 3mm by vibratory sieve, and granularity enters step 05 less than the material of 3mm;
Step 05: adopt the dry type magnetic separator de-ironing to Material deironing;
Step 06: material enters the homogenizing feed bin through conveyer belt, carries out homogenizing and mixes;
Step 07: material enters the one-level ball mill and implements wet grinding after metering;
Step 08: to stock grading, granularity is returned one-level ball mill continuation grinding greater than the material of 100 μ m by cyclone, and granularity enters step 09 less than the material of 100 μ m;
Step 09: material enters flotation device, and mica and other impurity are removed in flotation;
Step 10: remove irony and other magnetisable material by high gradient magnetic separator;
Step 11: material enters the agitator homogenizing, fully mixes;
Step 12: material enters the secondary ball mill, implements wet grinding once more;
Step 13: by ultra tiny grader material is carried out classification, granularity is returned the secondary ball mill greater than the material of 5 μ m, and granularity enters step 14 less than the material of 5 μ m;
Step 14: adopt concentrator to concentrate slurry, implement Separation of Solid and Liquid;
Step 15:, further realize Separation of Solid and Liquid by the filter press dehydration;
Step 16: form powder by the drying machine drying material;
Step 17: be stored in the storage facilities after the gauging of products packing.
This method adopts secondary wet grinding technology, and material carries out flotation, magnetic separation behind the one-level ball milling, enter secondary ball milling operation thereafter.Behind the one-level ball milling, the specific gravity control of the material of granularity in the 10-100 mu m range is controlled the flotation granularity more than 90% with this.The suitable granularity of flotation is 10-100 μ m.Granularity is big, and material wraps up mutually, separates not exclusively, is difficult to flotation, magnetic separation; The undersized of material produces argillization, is unfavorable for that also flotation and magnetic separation separate.
Adopt the ball mill of corundum ball, corundum lining in described ball milling this program in small, broken bits, based on grinding, guarantee that not only grinding process do not sneak into irony, and because corundum proportion is relatively little, make the deformation process relative velocity of material slow, change even, smooth surface, output powder shape improves the compactness of product based on the approximate circle sphere.
Breaking ores of the present invention, ball milling fine crushing process all adopt closed-circuit system, by classifying equipoment certified products are selected and are entered subsequent processing, and defective work returns an operation, guarantee reasonable distribution when reducing power consumption to greatest extent.The twice homogenization process that carries out at homogenizing feed bin, agitator respectively is set in the technological process, can guarantees the uniformity and the quality of stability of product.
Major technique and performance indications according to the nepheline syenite powder of made of the present invention are as follows:
1. iron, Ti content: TiO
2:≤0.01%; Fe
2O
3:≤0.10%.
2. granularity and size distribution :≤0.5 μ m about 10%; 0.5 μ m-5 μ m 〉=90%; About 80%, the 3 μ m-5 μ m about 10% of 1 μ m-3 μ m.
3. grain shape: 98% is the approximate circle spheric granules.
The content of mentioning in the foregoing description is not to be limitation of the invention, and without departing from the inventive concept of the premise, any conspicuous replacement is all within protection scope of the present invention.
Claims (7)
1. method for preparing nepheline syenite powder, the step of described method comprises:
(a) eluriate raw material, prepare burden according to product requirement;
(b) adopt the crusher in crushing ore, and by vibratory sieve to stock grading;
(c) material is after the dry type deironing, be delivered to the one-level ball mill and implement wet grinding, and by cyclone to stock grading;
(d) material enters flotation device and implements the flotation operation, to remove the mica in the nepheline syenite; Remove irony and other magnetisable material by magnetic separator;
(e) mass transport is implemented wet grinding once more to the secondary ball mill; And material is carried out classification by grader;
(f) dehydrate, form powder.
2. the method for preparing nepheline syenite powder according to claim 1, it is characterized in that: described flotation operation adopts primary amine salt, sodium metasilicate, three kinds of medicaments of sodium carbonate, the weight ratio of three kinds of medicaments is followed successively by (2.5-3.5): 1: 1, the consumption summation of three kinds of medicaments was the 0.3%-0.8% of flotation weight of material.
3. the method for preparing nepheline syenite powder according to claim 2 is characterized in that: the floatation concentration of described flotation material is controlled in the 10%-25%.
4. the method for preparing nepheline syenite powder according to claim 3 is characterized in that: described flotation operation adopts reverse flotation method, and the emersion thing is an impurity, and sediment enters subsequent processing.
5. the method for preparing nepheline syenite powder according to claim 4 is characterized in that: material is behind the one-level ball milling, and the specific gravity control of the material of granularity in the 10-100 mu m range is controlled the flotation granularity more than 90% with this.
6. according to each described method for preparing nepheline syenite powder of claim 1 to 5, it is characterized in that: described method adopts the ball mill of corundum ball, corundum lining that mineral are ground.
7. the method for preparing nepheline syenite powder according to claim 6 is characterized in that: described material is implemented the homogenizing mixing before entering ball mill grinding.
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| CN 201010229489 CN101912811B (en) | 2010-07-15 | 2010-07-15 | Method for preparing nepheline syenite powder |
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|---|---|---|---|
| CN 201010229489 CN101912811B (en) | 2010-07-15 | 2010-07-15 | Method for preparing nepheline syenite powder |
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| CN101912811A true CN101912811A (en) | 2010-12-15 |
| CN101912811B CN101912811B (en) | 2013-01-09 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527495A (en) * | 2010-12-22 | 2012-07-04 | 佛冈县山深陶瓷原料有限公司 | Mineral separation process for non-metal ore |
| CN102527475A (en) * | 2012-01-16 | 2012-07-04 | 黄建平 | Production process and production line of ceramic slurry |
| CN102649095A (en) * | 2011-02-24 | 2012-08-29 | 苏州纳方工程材料有限公司 | Grinding method of titanium dioxide |
| CN103182344A (en) * | 2011-12-30 | 2013-07-03 | 北京有色金属研究总院 | Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore |
| CN103274763A (en) * | 2013-05-08 | 2013-09-04 | 英德市奥胜新材料有限责任公司 | Nepheline syenite powder and production method thereof |
| CN103274594A (en) * | 2013-06-05 | 2013-09-04 | 英德市奥胜新材料有限责任公司 | Glaz-use potassium feldspar powder and preparation method thereof |
| CN105327773A (en) * | 2015-11-26 | 2016-02-17 | 四川南江新兴矿业有限公司 | Method for recovering nepheline ore in nepheline ore tailings |
| CN105381865A (en) * | 2015-11-26 | 2016-03-09 | 四川南江新兴矿业有限公司 | Method for removing calcium oxide of nepheline ores through strong magnetic separation |
| CN107262268A (en) * | 2017-08-09 | 2017-10-20 | 四川南江新兴矿业有限公司 | Nepheline ore-sorting system and method |
| CN107837933A (en) * | 2017-10-19 | 2018-03-27 | 四川南江新兴矿业有限公司 | A kind of nonmetallic nepheline wet split technique |
| CN108866348A (en) * | 2018-07-27 | 2018-11-23 | 阳谷祥光铜业有限公司 | A kind of space blowing material preparation technology and stock preparation system of matte |
| CN112110451A (en) * | 2020-09-04 | 2020-12-22 | 江西九岭新能源有限公司 | Method for recycling nepheline in lithium feldspar tailings by soft natural stripping process |
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| US20080015104A1 (en) * | 2006-07-13 | 2008-01-17 | Unimin Corporation | Ultrafine nepheline syenite |
| CN101657510A (en) * | 2007-02-07 | 2010-02-24 | 尤尼明公司 | The nepheline syenite powder is to produce the method for ultra-fine grain size product |
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2010
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| CN101657510A (en) * | 2007-02-07 | 2010-02-24 | 尤尼明公司 | The nepheline syenite powder is to produce the method for ultra-fine grain size product |
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| 《中国非金属矿工业导刊》 19971031 韩家(白令)等 我国霞石正长岩资源状况及选矿工艺研究 , 第05期 * |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527495B (en) * | 2010-12-22 | 2014-04-16 | 佛冈县山深陶瓷原料有限公司 | Mineral separation process for non-metal ore |
| CN102527495A (en) * | 2010-12-22 | 2012-07-04 | 佛冈县山深陶瓷原料有限公司 | Mineral separation process for non-metal ore |
| CN102649095A (en) * | 2011-02-24 | 2012-08-29 | 苏州纳方工程材料有限公司 | Grinding method of titanium dioxide |
| CN103182344A (en) * | 2011-12-30 | 2013-07-03 | 北京有色金属研究总院 | Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore |
| CN103182344B (en) * | 2011-12-30 | 2014-07-16 | 北京有色金属研究总院 | Ore dressing combination process for processing high-slime lead-zinc oxide and sulfide mixed ore |
| CN102527475A (en) * | 2012-01-16 | 2012-07-04 | 黄建平 | Production process and production line of ceramic slurry |
| CN102527475B (en) * | 2012-01-16 | 2014-04-09 | 黄建平 | Production process and production line of ceramic slurry |
| CN103274763B (en) * | 2013-05-08 | 2014-06-11 | 英德市奥胜新材料有限责任公司 | Nepheline syenite powder and production method thereof |
| CN103274763A (en) * | 2013-05-08 | 2013-09-04 | 英德市奥胜新材料有限责任公司 | Nepheline syenite powder and production method thereof |
| CN103274594A (en) * | 2013-06-05 | 2013-09-04 | 英德市奥胜新材料有限责任公司 | Glaz-use potassium feldspar powder and preparation method thereof |
| CN105327773A (en) * | 2015-11-26 | 2016-02-17 | 四川南江新兴矿业有限公司 | Method for recovering nepheline ore in nepheline ore tailings |
| CN105381865A (en) * | 2015-11-26 | 2016-03-09 | 四川南江新兴矿业有限公司 | Method for removing calcium oxide of nepheline ores through strong magnetic separation |
| CN107262268A (en) * | 2017-08-09 | 2017-10-20 | 四川南江新兴矿业有限公司 | Nepheline ore-sorting system and method |
| CN107837933A (en) * | 2017-10-19 | 2018-03-27 | 四川南江新兴矿业有限公司 | A kind of nonmetallic nepheline wet split technique |
| CN107837933B (en) * | 2017-10-19 | 2020-02-07 | 四川南江新兴矿业有限公司 | Nonmetal nepheline wet separation process |
| CN108866348A (en) * | 2018-07-27 | 2018-11-23 | 阳谷祥光铜业有限公司 | A kind of space blowing material preparation technology and stock preparation system of matte |
| CN112110451A (en) * | 2020-09-04 | 2020-12-22 | 江西九岭新能源有限公司 | Method for recycling nepheline in lithium feldspar tailings by soft natural stripping process |
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