CN101559402A - Method for purifying high-ash coke powder - Google Patents
Method for purifying high-ash coke powder Download PDFInfo
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- CN101559402A CN101559402A CNA2009100944712A CN200910094471A CN101559402A CN 101559402 A CN101559402 A CN 101559402A CN A2009100944712 A CNA2009100944712 A CN A2009100944712A CN 200910094471 A CN200910094471 A CN 200910094471A CN 101559402 A CN101559402 A CN 101559402A
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- coke powder
- ash
- sieve
- dense media
- gravity treatment
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000005484 gravity Effects 0.000 claims abstract description 24
- 239000002253 acid Substances 0.000 claims abstract description 8
- 238000007873 sieving Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000725 suspension Substances 0.000 claims description 8
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052683 pyrite Inorganic materials 0.000 claims description 2
- 239000011028 pyrite Substances 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 21
- 239000000047 product Substances 0.000 description 12
- 238000005406 washing Methods 0.000 description 8
- 239000000571 coke Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000005188 flotation Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 201000002282 venous insufficiency Diseases 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical group [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 150000007516 brønsted-lowry acids Chemical class 0.000 description 1
- 150000007528 brønsted-lowry bases Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for purifying high-ash coke powder, and is a technical proposal for treating waste high-ash coke powder of factories. The method comprises: sieving crushed coke powder according to certain particle diameter, placing coke powder on sieves into a heavy medium, performing primary gravity separation and secondary gravity separation for achieving the aim of separating ash and coke powder; and simultaneously making coke powder under the sieves react with an alkali solution and an acid solution respectively for removing impurities such as silicon dioxide, alumina, ferric oxide and the like. The method adopts sectional treatment, adopts different treatment modes for high-ash coke powder with different particle diameters, and can adapt to the quality variation of the coke powder in the production process. The method can reduce the ash content of the coke powder, improve the quality of the coke powder and reduce the loss of the coke powder in the purification process to the utmost extent, and is applied to the treatment of the waste coke powder.
Description
One, technical field
The present invention relates to a kind of method for purifying high-ash coke powder, is a kind of with the hydrometallurgical technology processing, raising fixed carbon content, the method for realization regeneration.
Two, background technology
In China, coke is the important raw material of industry and fuel.Coke is the solid product of coal high-temperature retorting.Though impurity such as coal washing part that can be removed gangues, in process of coking, the mineral matter that is mingled with in the coal is transferred in the product, becomes the part of coke.For many years, the quality of burnt quality all depends on coking raw material and coke making process, and the purification research of the accessory substance in coke and coke production and the shattering process---coke powder is less.It is to handle medicament that chemical method is purified with the bronsted lowry acids and bases bronsted lowry, and single or alternate treatment reduces the ash content in the coke powder.Though chemical method purification ash content clearance is higher, significant loss is few, because operation is complicated, treating capacity is little, and to the granularity requirements strictness, the industrialization integrated cost is higher.
At present domestic purification research to high-ash coke powder is less, and more to the research of coal separation.Coal preparation method commonly used has heavy media coal separation technology, Coal Jigging Technique, flotation technology, dry coal preparation technology etc.CN87101056 relates to a kind of novel dressing coal with dry fluidized bed apparatus and method. and this apparatus and method are by designing compound a, filling, partition type air-distribution device, and adopt multistage small size air-distribution device to piece together the method for large scale air-distribution device, fluid bed is applied in the coal separation process, and, reach the sorting purposes of coal by being the size distribution percetage by weight of mixture and rationally the choosing of fluidization number of dense media to magnetite powder, quartz sand.CN1465441 relates to a kind of dense media, flotation combined coal-dressing method that is used for coal separation, and it comprises: feed coal preparation, dense media, separation of coarse slime recovery, flotation, clean coal slime dewatering and black water are handled.The main frame that dense media adopts is heavy medium cyclone or lump coal separation machine and heavy medium cyclone, separation of coarse slime reclaims and adopts cyclone and desliming device or directly adopt desliming device, the main frame that flotation is adopted is a flotation column, and clean coal slime dewatering adopts filter press or pressing filter.CN1817470 relates to a kind of multifunction energy-saving jigging machine and coal preparation method thereof, it is characterized in that increasing by one multi-functional section after the middle coal section of existing multistage jig body, feed coal is finished once in described jigging machine that spoil separates, middle coal separates, cleaned coal separates, wooden slag separates and overflow is gone into five functional such as flotation preliminary treatment.In the washing method of numerous coals, the physics method is purified becomes main washing mode because of characteristics such as easy to operate, that cost is low, mainly according between coke powder and impurity character---the internal stress as wellability, proportion, impurity and carbon is different, utilize above character that carbon and impurity are isolated.Physical purification method is easy, easy to operate, cost is low, has characteristics such as general, efficient, is a kind of coke powder purification mode that application potential is arranged.
Three, summary of the invention
The purpose of this invention is to provide a kind of method for purifying high-ash coke powder.Coke powder after the fragmentation by certain particle diameter screening, is made sieve go up coke powder and places dense media,, reach the purpose that ash content separates with coke powder through one-level gravity treatment and secondary gravity treatment; Sieve down coke powder respectively with aqueous slkali, acid solution reaction, remove impurity such as silica, aluminium oxide, iron oxide.The present invention adopts segmented to handle, high-ash coke powder for different-grain diameter adopts the different disposal mode, the variation of coke powder quality in adapt to producing can reduce the coke powder ash content to greatest extent, improves the coke powder quality, to satisfy in the industrial production requirement to high-purity coke.
Fig. 1 is a process chart of the present invention, and it is finished according to the following steps:
1) high-ash coke powder is carried out crushing and screening, obtain sieving coke powder and sieve coke powder down;
2) will sieve coke powder, be 1.3～1.9g/cm with density
3Dense media liquid carry out the one-level gravity treatment, stir, the weight ratio of coke powder and dense media liquid is 1: 15～30, after leaving standstill, takes out and floats thing, the flush away dense media also reclaims the coke powder product; Sediment density is 1.5～2.0g/cm
3The gravity treatment of dense media secondary, the weight ratio of coke powder and dense media liquid is 1: 15～30, reclaims floating thing, the tailing discharging of secondary gravity treatment obtains the coke powder product.The dense media of described one-level gravity treatment and secondary gravity treatment is zinc chloride liquid, magnetite powder suspension, a kind of in magnetic iron ore suspension and the pyrite suspension;
3) coke powder concentration is 1.2～1.6mol/L under the sieve, and the aqueous slkali heat treated that temperature is 70～80 ℃ 1～6 hour, the weight ratio of coke powder and aqueous slkali are 1: 2～6, filters;
4) coke powder is with 70～80 ℃ temperature under the sieve that will obtain, and mass percent is that 10～18% acid solution is handled 5～60min, and the sieve weight ratio of coke powder and acid solution down is 1: 2～8,, filter, wash, obtain the coke powder product.
The advantage that the present invention compares with known technology
The present invention can make the partial impurities in the coke powder separate with carbon because of all circles' in-plane stress difference the coke powder fragmentation, improves the ash content clearance of physics method.Broken back sieve is gone up coke powder and is accounted for 60～75% of total amount, and sieve coke powder down accounts for 25～40%, has significantly reduced the treating capacity of chemical method, reduces cost; The gravity treatment medium that adopts has easy cleaning for industrial gravity treatment medium commonly used, and is recyclable, and ash content is removed obviously, rate of recovery height, and the ash content clearance is about 50%, the rate of recovery about 80%.
Four, description of drawings:
Fig. 1 is a process chart of the present invention.
Five, the specific embodiment
Embodiment 1:
The raw material coke powder contains ash content 31.87 quality %.With raw material fragmentation, ball milling to 20～0.1mm; Sieve by 0.2mm, it is 1.4g/cm that coke powder on the sieve of+0.2mm is put into density
3Magnetite powder suspension in the one-level gravity treatment, the weight ratio of coke powder and dense media liquid is 1: 25, fully stirs to leave standstill the back and reclaim floating thing, after washing, drying, obtains one-level gravity treatment product; It is 1.6g/cm that hypostasis is put into density
3Magnetite powder suspension in carry out the secondary gravity treatment, the weight ratio of coke powder and dense media liquid is 1: 25, through washing, after the drying, obtain secondary gravity treatment product; (0.2mm) sodium hydroxide solution with 1.3mol/L reacts, and heats 3h, and the weight ratio of coke powder and aqueous slkali is 1: 2.5 will to sieve down coke powder, again with 11% sulfuric acid solution heating 20min, the weight ratio of coke powder and acid solution is washing in 1: 4, after the drying, reclaims product.It is 17.23% that products at different levels mix the back total ash, and the rate of recovery is 64%.
Embodiment 2
Behind the broken ball milling of coke powder, sieve by 0.5mm, will sieve coke powder (+0.5mm) to put into density be 1.5g/cm
3Liquor zinci chloridi in the one-level gravity treatment, the weight ratio of coke powder and dense media liquid is 1: 15, fully stirs to leave standstill the back and reclaim floating thing, after washing, drying, obtains one-level gravity treatment product; It is 1.7g/cm that hypostasis is put into density
3Liquor zinci chloridi in carry out the secondary gravity treatment, the weight ratio of coke powder and dense media liquid is 1: 20, through washing, after the drying, obtain secondary gravity treatment product; To sieve down coke powder (0.5mm) add thermal response 4h with the potassium hydroxide solution of 1.4mol/L, the weight ratio of coke powder and aqueous slkali is 1: 3, and again with 15% hydrochloric acid solution heating 30min, the weight ratio of coke powder and acid solution is to wash at 1: 5, after the drying, the recovery product.After mixing products at different levels, total ash is 16.45%, the rate of recovery 79%.
Claims (2)
1, a kind of method for purifying high-ash coke powder, it is characterized in that: it is finished according to the following steps,
1) coke powder is carried out crushing and screening, obtain sieving coke powder and sieve coke powder down;
2) will sieve coke powder, be 1.3～1.9g/cm with density
3Dense media liquid carry out the one-level gravity treatment, stir, the weight ratio of coke powder and dense media liquid is 1: 15～30, after leaving standstill, takes out and floats thing, the flush away dense media also reclaims the coke powder product; Sediment density is 1.5～2.0g/cm
3The gravity treatment of dense media secondary, the weight ratio of coke powder and dense media liquid is 1: 15～30, reclaims floating thing, the tailing discharging of secondary gravity treatment obtains the coke powder product;
3) coke powder concentration is 1.2～1.6mol/L under the sieve, and the aqueous slkali heat treated that temperature is 70～80 ℃ 1～6 hour, the weight ratio of coke powder and aqueous slkali are 1: 2～6, filters;
4) coke powder is with 70～80 ℃ temperature under the sieve that will obtain, and mass percent is that 10～18% acid solution is handled 5～60min, and the sieve weight ratio of coke powder and acid solution down is 1: 2～8,, filter, wash, obtain the coke powder product.
2, method for purifying high-ash coke powder according to claim 1 is characterized in that: the dense media of described one-level gravity treatment and secondary gravity treatment is liquor zinci chloridi, magnetite powder suspension, a kind of in magnetic iron ore suspension and the pyrite suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100944712A CN101559402B (en) | 2009-05-19 | 2009-05-19 | Method for purifying high-ash coke powder |
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| CN2009100944712A CN101559402B (en) | 2009-05-19 | 2009-05-19 | Method for purifying high-ash coke powder |
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| CN101559402A true CN101559402A (en) | 2009-10-21 |
| CN101559402B CN101559402B (en) | 2012-08-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102205277A (en) * | 2010-12-15 | 2011-10-05 | 太原理工大学 | Method for applying collecting agent for coke powder flotation |
| CN101774565B (en) * | 2009-12-25 | 2012-01-11 | 昆明理工大学 | Method for deeply deashing cock |
| CN102533300A (en) * | 2011-12-31 | 2012-07-04 | 山西沁新能源集团股份有限公司 | Clean-type coke byproduct high-ash coke powder industrial purifying device for heat recovery coke furnace |
| CN103184059A (en) * | 2011-12-31 | 2013-07-03 | 山西沁新能源集团股份有限公司 | Clean heat recovery coke oven coke by-product high-ash coke powder industrial purification method |
| CN106190420A (en) * | 2016-07-08 | 2016-12-07 | 江苏省冶金设计院有限公司 | A kind of method of low-order coal fixed carbon content in raising |
| CN107674725A (en) * | 2017-10-24 | 2018-02-09 | 六盘水师范学院 | A kind of technique for preparing super clean coal using anthracite chemistry method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1212906A (en) * | 1998-10-16 | 1999-04-07 | 詹尼塞斯研究公司 | Coal cleaning process |
| CN1215907C (en) * | 2002-09-24 | 2005-08-24 | 宁夏煤业集团有限责任公司太西洗煤厂 | Smokeless ultralow ash content pure coal and the production technology thereof |
| CN2661313Y (en) * | 2003-09-09 | 2004-12-08 | 魏大山 | Coal and acid reaction desulfurizing and deashing device |
| CN101011679B (en) * | 2006-12-05 | 2010-10-06 | 唐山易通科技开发有限公司 | Simplified coal slurry dense-medium coal separation process |
-
2009
- 2009-05-19 CN CN2009100944712A patent/CN101559402B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101774565B (en) * | 2009-12-25 | 2012-01-11 | 昆明理工大学 | Method for deeply deashing cock |
| CN102205277A (en) * | 2010-12-15 | 2011-10-05 | 太原理工大学 | Method for applying collecting agent for coke powder flotation |
| CN102205277B (en) * | 2010-12-15 | 2013-02-13 | 太原理工大学 | Method for applying collecting agent for coke powder flotation |
| CN102533300A (en) * | 2011-12-31 | 2012-07-04 | 山西沁新能源集团股份有限公司 | Clean-type coke byproduct high-ash coke powder industrial purifying device for heat recovery coke furnace |
| CN103184059A (en) * | 2011-12-31 | 2013-07-03 | 山西沁新能源集团股份有限公司 | Clean heat recovery coke oven coke by-product high-ash coke powder industrial purification method |
| CN106190420A (en) * | 2016-07-08 | 2016-12-07 | 江苏省冶金设计院有限公司 | A kind of method of low-order coal fixed carbon content in raising |
| CN107674725A (en) * | 2017-10-24 | 2018-02-09 | 六盘水师范学院 | A kind of technique for preparing super clean coal using anthracite chemistry method |
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| CN101559402B (en) | 2012-08-01 |
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