CN105665124A - High-intergrowth, high-ash and high-sulfur coal sorting and slurrying integrated process - Google Patents
High-intergrowth, high-ash and high-sulfur coal sorting and slurrying integrated process Download PDFInfo
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- CN105665124A CN105665124A CN201610226849.XA CN201610226849A CN105665124A CN 105665124 A CN105665124 A CN 105665124A CN 201610226849 A CN201610226849 A CN 201610226849A CN 105665124 A CN105665124 A CN 105665124A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/005—General arrangement of separating plant, e.g. flow sheets specially adapted for coal
Abstract
The invention discloses a high-intergrowth, high-ash and high-sulfur coal sorting and slurrying integrated process and is applicable to the technical field of mineral separation. The process comprises the steps of conducting 1mm grading, feeding materials with the size greater than 1mm into a material mixing pool, and conducting sorting through two a two-stage double-product dense medium cyclone, so that clean coal I, medium coal I and gangue I are obtained, crushing the medium coal I, conducting slurry blending operation on medium coal II obtained after separation, and after slurry blending is completed, feeding the materials into a flotation machine I for sorting, so that clean coal II and tailing I are obtained; feeding materials with the size smaller than 1 mm which are obtained through separation into a material mixing pool I, conducting 0.2mm grading, and throwing materials with the size ranging from 0.2 mm to 1 mm into an autogenous medium cyclone for sorting, so that clean cola III and gangue II are obtained; feeding materials with the size smaller than 0.2 mm into an ore slurry conditioner, so that ore slurry is obtained, and feeding the ore slurry into a flotation machine II, so that clean coal IV and tailing II are obtained; adding water and efficient composite additives to all the clean coal V, then conducting stirring, so that a mixed product is obtained, feeding the mixed product into a slurry filtering system, removing impurities, and then outputting water-coal slurry. By means of the high-intergrowth, high-ash and high-sulfur coal sorting and slurrying integrated process, energy consumption is lowered, environmental pollution is reduced, and economic benefits are remarkable.
Description
Technical field
The present invention relates to a kind of high grey sulphur coal sorting slurrying integral process, be particularly useful for using in mineral separation technology fieldHigh adhesion height ash sulphur coal sorting slurrying integral process.
Background technology
The present invention's design is based on high adhesion height ash sulphur coal sorting slurrying practical technique, is mainly by high adhesion height ash high-sulfurThe sorting of coal and the production technology of water-coal-slurry combine, and have not only improved the recycling of high adhesion height ash sulphur coal but also have savedThe broken link of ore grinding in original coal water slurry process system, simplified the process system of water-coal-slurry, reduced energy consumption.
Along with a large amount of exploitations of coal in China, in China's coal field development, turn to from original superficial part seam mining and low-sulfur coal exploitationThe exploitation of deep layer high-sulfur dirty coal, at present China is containing a large amount of high-sulfur dirty coals, and the accounting for of minable coal seam high grey sulphur coalRatio is very large, and the development ratio of sulphur coal is larger. Therefore in coal preparation plant's assorting room, can sub-elect the coal slime of the high ash of a large amount of high-sulfurs,These coal slimes, because the grey high combustion of sulfur of height can produce pernicious gas contaminated environment, therefore cannot directly use, in order to improve coalThe efficiency of comprehensive utilization, need further carry out the grey sulphur coal sorting of height and be used, at present also not comparatively widely forThe complete process system of the sorting processing and utilization of high grey sulphur coal, a large amount of height ash sulphur coal do not obtain further high-efficiency environment friendlyUtilization, be therefore a technical barrier to the sorting processing and utilization of the grey sulphur coal of height.
, New type coal base liquid fuel novel, efficient, clean as one, water-coal-slurry is a kind of coal dust by 65%-70%, 29%-30%Water and be less than the coal-based liquid fuel of the high-efficiency and low-pollution of 1% chemical addition agent composition. Water-coal-slurry is as good fuelWith the raw material of gasification use, the output of water-coal-slurry will be along with the development of the development of domestic industry technology and gasification technology, water-coal-slurryDemand also will further improve. But because a large amount of exploitation consumption and the fat coal reserves of domestic fat coal reduce year by year,Add water-coal-slurry cost relatively high etc. each side's factor, a large amount of production of water-coal-slurry is restricted.
At present, coal is still the main energy sources of Chinese society and industrial development, accounts for 70% left and right of primary energy, suitable in futureIn long period, the principal status of public economy of coal in China's energy resource structure can not change. On the one hand, a large amount of exploitations of fat coal and disappearingConsumption, the adopted amount of fat coal reduces, and the content of high grey sulphur coal increases. Present stage is the not sorting to this part high grey high-sulfur alsoThe technique of reprocessing, high grey sulphur coal is not fully utilized. On the other hand, the processing technology cost of water-coal-slurry is higher at present,Wherein the energy consumption of ore grinding part accounts for whole energy consumption ratio greatly, and the cost that reduces water-coal-slurry product is also present water-coal-slurry skillA difficult problem of art.
Summary of the invention
For above-mentioned technical problem, provide a kind of technique simple, solve the problem of the recycling of high adhesion height ash sulphur coal,The efficiency that has improved the comprehensive utilization of coal, has reduced energy consumption, has reduced the pollution to environment, the high adhesion of remarkable in economical benefitsThe process of the height ash sulphur coal sorting of body.
For realizing above-mentioned technical purpose, high adhesion height ash sulphur coal sorting slurrying integral process of the present invention, its step is as follows:
Feed high adhesion height ash sulphur coal to classifying screen and carry out 1mm classification, exceed the material of 1mm ,+1mm material is separatedGo out to feed batch mixing pond, feed batch mixing pond+1mm material feeds two section of two product heavy-medium cyclone ,+1mm material warp through pump ICross two section of two product heavy-medium cyclone sorting and obtain cleaned coal I, middle coal I and spoil I, utilize that disintegrating machine obtains sortingCoal carries out selective crushing operation, makes middle coal broken and fully dissociate again, utilizes kaskad apparatus for pre-flotation pulp conditioning to carry out the middle coal II after dissociatingThe operation of sizing mixing, after the middle coal obtaining after the operation of sizing mixing is sized mixing, material feeds through flotation column and carries out sorting, obtains through the sorting of flotation device ITo cleaned coal II and tail coal I;
Isolated and be less than 1mm material by gradation sizing level, the material of-1mm enters batch mixing pond I, in the I of batch mixing pond-1mmMaterial feed classification vortex sieve by pump III and carry out 0.2mm classification, the 1-0.2mm material that classification goes out feeds batch mixing pond II, mixed1-0.2mm material in the II of material pond is squeezed into autogenous medium cyclone through pump II and is carried out sorting, obtains two kinds of cleaned coal III and spoil IIProduct; The isolated material that is less than 0.2mm, the material of-0.2mm feeds after kaskad apparatus for pre-flotation pulp conditioning is sized mixing and obtains ore pulp,Ore pulp after sizing mixing feeds the sorting of flotation device II and obtains cleaned coal IV and tail coal II; The all cleaned coal V that sub-elect are fed to agitator,And after adding water and high efficiency complex additive, stirring acquisition product mix feeds filter pulp system, utilizes filter pulp system to remove impurity outputWater-coal-slurry.
Describedly obtain through flotation column sorting the cleaned coal III that cleaned coal II and autogenous medium hydrocyclone sub-elect and sneak into by ore grinding linkSize mixing together operation feed through flotation column and carry out sorting of middle coal broken and that fully dissociate; Described through two section of two product weightThe sorting of medium cyclone obtains cleaned coal I, describedly obtains through flotation column sorting that cleaned coal II and autogenous medium hydrocyclone sub-electCleaned coal III all feeds agitator production water-coal-slurry.
Beneficial effect:
To the high adhesion height ash sorting of sulphur coal and the preparation technology of water-coal-slurry be combined; Realize high adhesion height ashThe secondary sorting utilization of sulphur coal, has improved the comprehensive utilization ratio of coal resources; Improve the useful money of high adhesion height ash sulphur coalThe recycling in source has also reduced power consume simultaneously, and the ore grinding in assorting room has saved the ore grinding operation in water-coal-slurry link,The simple power consumption of production technology with respect to traditional coal-water-slurry is little, and operating cost is low, remarkable in economical benefits; Owing to not choosing dividingThe sorting cleaned coal fragmentation of two section of two product heavy-medium cyclone, can reach and the thickness collocation of other products, realize preferablyThe endocorpuscular deposition efficiency of water-coal-slurry, reaches good grating effect.
Brief description of the drawings
Fig. 1 is the high adhesion height ash sulphur coal sorting slurrying integral process FB(flow block) of the embodiment of the present invention one;
Fig. 2 is the equipment schematic diagram that the high adhesion height ash of the embodiment of the present invention one sulphur coal sorting slurrying integral process uses;
Fig. 3 is the high adhesion height ash sulphur coal sorting slurrying integral process FB(flow block) of the embodiment of the present invention two;
Fig. 4 is the equipment schematic diagram that the high adhesion height ash of the embodiment of the present invention two sulphur coal sorting slurrying integral process uses.
In figure: A-vibratory sieve, B-batch mixing pond, C-pump I, two section of two product heavy-medium cyclone of D-, E-disintegrating machine, F-ore pulpPrepare device, G-flotation device I, H-ore pulp circulating pump, I-valve, J-batch mixing pond I, K-classification vortex sieve, L-batch mixing pond II,M-pump II, N-autogenous medium hydrocyclone, O-kaskad apparatus for pre-flotation pulp conditioning, P-flotation device II, Q-circulating pump, R-agitator, S-filterSlurry system, T-pump III, the high adhesion height ash of 1-sulphur coal, 2-+1mm material, 3-cleaned coal I, coal I in 4-, 5-spoil I,Coal II in 6-, in 7-coal size mixing after material, 8-cleaned coal II, 9-tail coal I, the material of 10--1mm, 11-1-0.2mm material,12-cleaned coal III, 13-spoil II, the material of 14--0.2mm, 15-ore pulp, 16-cleaned coal IV, 17-tail coal II, 18-cleaned coal V,19-product mix, 20-high efficiency complex additive, 21-impurity, 22-water-coal-slurry.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment is described further:
As depicted in figs. 1 and 2, high adhesion height ash sulphur coal sorting slurrying integral process of the present invention, its step is as follows:
Feed high adhesion height ash sulphur coal 1 to classifying screen A and carry out 1mm classification, exceed the material of 1mm ,+1mm material 2Be separated and feed batch mixing pond B and mix, feed batch mixing pond B+1mm material 2 feeds two section of two product dense media through pump I CCyclone D, through two section of two product heavy-medium cyclone D, sorting obtains cleaned coal I 3, middle coal I 4 and spoil I 5 to+1mm material 2,Utilize the middle coal I 4 that disintegrating machine E obtains sorting to carry out selective crushing operation, make middle coal I 4 broken and fully dissociate again, profitWith kaskad apparatus for pre-flotation pulp conditioning F to the operation of sizing mixing of the middle coal II 6 after dissociating, material 7 after the middle coal obtaining after the operation of sizing mixing is sized mixingFeed through flotation column G and carry out sorting, obtain cleaned coal II 8 and tail coal I 9 through flotation device I G sorting;
Isolated and be less than 1mm material 10 by classifying screen A classification, 10 of the materials of-1mm enter batch mixing pond I J, batch mixing pondIn I J-material 10 of 1mm feeds classification vortex sieve K by pump III T and carries out 0.2mm classification, the 1-0.2mm thing that classification goes outMaterial 11 feeds batch mixing pond II L, and the 1-0.2mm material 11 in the II L of batch mixing pond is squeezed into autogenous medium cyclone N through pump II M and enteredRow sorting, obtains 13 two kinds of products of cleaned coal III 12 and spoil II; The isolated material that is less than 0.2mm, the thing of-0.2mmMaterial 14 feeds after kaskad apparatus for pre-flotation pulp conditioning O sizes mixing and obtains ore pulp 15, and the ore pulp 15 after sizing mixing feeds flotation device II P sorting and obtainsCleaned coal IV 16 and tail coal II 17; The all cleaned coal V 18 that sub-elect are fed to agitator R, and add water and high efficiency complex additive20 rear stirrings obtain product mix 19 and feed filter pulp system S, utilize filter pulp system S to remove impurity 21 output water-coal-slurry 22.
As shown in Figure 3 and Figure 4, describedly obtain cleaned coal II 8 and autogenous medium hydrocyclone N sub-elects through flotation column G sortingCleaned coal III 12 sneak into size mixing together operation F feeding through flotation of middle coal 4 broken by ore grinding link E and that fully dissociatePost G carries out sorting; It is described that through two section of two product heavy-medium cyclone D, sorting obtains cleaned coal I 3, described through flotation column G sortingObtain the cleaned coal III 12 that cleaned coal II 8 and autogenous medium hydrocyclone N sub-elect and all feed agitator R production water-coal-slurry 22.
1.-1mm screenings-vortex sieve-floatation clean coal and autogenous medium cyclone cleaned coal-size mixing-flotation-water-coal-slurry processed:-1mm screenings 10 enters batch mixing pond I J and carries out 0.2mm classification, 1-0.2mm material through pump III T through classification vortex sieve K11 enter batch mixing pond II L squeezes into autogenous medium cyclone N through pump II M and carries out sorting, and sorting obtains cleaned coal III 12 and spoil II13 two parts products, the material 14 of-0.2mm is sized mixing by kaskad apparatus for pre-flotation pulp conditioning O, enters flotation device II P after the ore pulp 15 after sizing mixing,Sorting obtains cleaned coal IV 16 and tail coal II 17. The cleaned coal III 12 that the sorting of autogenous medium hydrocyclone is obtained and the sorting of flotation device IIThe cleaned coal IV 16 obtaining enters kaskad apparatus for pre-flotation pulp conditioning F simultaneously and sizes mixing, and with two section of two product fragmentation after middle coal size mixing after material7 enter flotation device I G jointly carries out sorting. The cleaned coal II 8 that sorting obtains through flotation device I G and heavy medium cyclone sortingCleaned coal I 3 is added water and high efficiency complex additive 20 by certain amount, obtains product mix 19 and enter after agitator R stirsFilter pulp system S removes impurity 21, output water-coal-slurry 22.
2.-1mm screenings-vortex sieve-floatation clean coal and autogenous medium cyclone cleaned coal-water-coal-slurry processed. The sorting of-1mm materialOperation: by vibratory sieve, high adhesion height ash sulphur coal is carried out after classification, screenings enters cyclone classification sieve and carries out secondary grading,Partition size is 0.2mm.-1mm screenings 10 enters batch mixing pond J and carries out 0.2mm classification through pump T through vortex sieve K,1-0.2mm material 11 enters batch mixing pond II L and squeezes into autogenous medium cyclone N through pump II M and carry out sorting, and sorting obtains cleaned coalIII 12 and spoil II 13 two parts products. The material 14 of-0.2mm is sized mixing by kaskad apparatus for pre-flotation pulp conditioning O, the ore pulp 15 after sizing mixingAfter enter flotation device II P, sorting obtains cleaned coal IV 16 and tail coal II 17. And with sorting obtains through flotation device I G cleaned coal II 8Add water and high efficiency complex additive 20 with the cleaned coal I 3 of heavy medium cyclone sorting by certain amount, stir through agitator RAfter obtain product mix 19 enter filter pulp system S remove impurity 21, output water-coal-slurry 22.
Claims (3)
1. a high adhesion height ash sulphur coal sorting slurrying integral process, is characterized in that step is as follows:
Feed high adhesion height ash sulphur coal (1) to classifying screen (A) and carry out 1mm classification, exceed the material of 1mm ,+1mmMaterial (2) is separated and feeds batch mixing pond (B), feed batch mixing pond (B)+1mm material (2) through pump I (C)Feed two section of two product heavy-medium cyclone (D) ,+1mm material (2) is through two section of two product heavy-medium cyclone (D)Sorting obtains cleaned coal I (3), middle coal I (4) and spoil I (5), the middle coal that utilizes disintegrating machine (E) to obtain sortingI (4) is carried out selective crushing operation, makes middle coal I (4) broken and fully dissociate again, utilizes kaskad apparatus for pre-flotation pulp conditioning (F) to separatingFrom after middle coal II (6) operation of sizing mixing, after the middle coal obtaining after the operation of sizing mixing is sized mixing, material (7) feeds through flotation column(G) carry out sorting, obtain cleaned coal II (8) and tail coal I (9) through flotation device I (G) sorting;
Isolated and be less than 1mm material (10) by classifying screen (A) classification, the material (10) of-1mm enters batch mixingPond I (J), in batch mixing pond I (J)-material (10) of 1mm feeds classification vortex sieve (K) by pump III (T) and entersRow 0.2mm classification, the 1-0.2mm material (11) that classification goes out feeds batch mixing pond II (L), in batch mixing pond II (L)1-0.2mm material (11) is squeezed into autogenous medium cyclone (N) through pump II (M) and is carried out sorting, obtains cleaned coal III (12)With (13) two kinds of products of spoil II; The isolated material that is less than 0.2mm, the material (14) of-0.2mm feeds ore depositSlurry is prepared after device (O) is sized mixing to obtain ore pulp (15), and the ore pulp (15) after sizing mixing feeds flotation device II (P) sortingObtain cleaned coal IV (16) and tail coal II (17); The all cleaned coal V (18) that sub-elect are fed to agitator (R), and add waterAnd after high efficiency complex additive (20), stirring acquisition product mix (19) feeds filter pulp system (S), utilizes filter pulp system (S)Remove impurity (21) output water-coal-slurry (22).
2. high adhesion height ash sulphur coal sorting slurrying integral process according to claim 1, is characterized in that:Describedly obtain through flotation column (G) sorting the cleaned coal III (12) that cleaned coal II (8) and autogenous medium hydrocyclone (N) sub-electSneak into size mixing together operation (F) feeding through flotation column of middle coal (4) broken by ore grinding link (E) and that fully dissociate(G) carry out sorting.
3. high adhesion height ash sulphur coal sorting slurrying integral process according to claim 1, is characterized in that:It is described that through two section of two product heavy-medium cyclone (D), sorting obtains cleaned coal I (3), described through flotation column (G) sortingObtain the cleaned coal III (12) that cleaned coal II (8) and autogenous medium hydrocyclone (N) sub-elect and all feed agitator (R)Production water-coal-slurry (22).
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| CN110694791A (en) * | 2019-08-27 | 2020-01-17 | 西安中原机械有限公司 | Process for extracting clean coal from middlings |
| CN110961241A (en) * | 2019-11-05 | 2020-04-07 | 乌拉特中旗毅腾矿业有限责任公司 | Efficient and environment-friendly flotation feeding process and screening device thereof |
| CN114522798A (en) * | 2021-12-30 | 2022-05-24 | 淮北矿业股份有限公司 | Separation process for ultrafine high-ash coal slime difficult to separate |
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| CN114522798A (en) * | 2021-12-30 | 2022-05-24 | 淮北矿业股份有限公司 | Separation process for ultrafine high-ash coal slime difficult to separate |
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