CN104828824B - A kind of method that carbide slag prepares calcium carbide with coke powder coforming - Google Patents
A kind of method that carbide slag prepares calcium carbide with coke powder coforming Download PDFInfo
- Publication number
- CN104828824B CN104828824B CN201510129164.9A CN201510129164A CN104828824B CN 104828824 B CN104828824 B CN 104828824B CN 201510129164 A CN201510129164 A CN 201510129164A CN 104828824 B CN104828824 B CN 104828824B
- Authority
- CN
- China
- Prior art keywords
- carbide
- slag
- calcium carbide
- ball
- coke powder
- 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.)
- Expired - Fee Related
Links
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 62
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000002893 slag Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 28
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000292 calcium oxide Substances 0.000 claims abstract description 35
- 239000011230 binding agent Substances 0.000 claims abstract description 24
- 238000005453 pelletization Methods 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011575 calcium Substances 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000010792 warming Methods 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 239000011280 coal tar Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 241000772415 Neovison vison Species 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 2
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000004939 coking Methods 0.000 claims description 2
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 2
- 229910000397 disodium phosphate Inorganic materials 0.000 claims description 2
- 229910000150 monocalcium phosphate Inorganic materials 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 150000007524 organic acids Chemical class 0.000 claims description 2
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 claims description 2
- 229910000342 sodium bisulfate Inorganic materials 0.000 claims description 2
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 2
- 239000000853 adhesive Substances 0.000 claims 1
- -1 phenolic aldehyde Chemical class 0.000 claims 1
- 239000000571 coke Substances 0.000 abstract description 11
- 230000018044 dehydration Effects 0.000 abstract description 2
- 238000006297 dehydration reaction Methods 0.000 abstract description 2
- 238000007711 solidification Methods 0.000 abstract description 2
- 230000008023 solidification Effects 0.000 abstract description 2
- 235000012255 calcium oxide Nutrition 0.000 description 31
- 239000000463 material Substances 0.000 description 17
- 239000002994 raw material Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 8
- 235000011941 Tilia x europaea Nutrition 0.000 description 8
- 239000004571 lime Substances 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 229920000881 Modified starch Polymers 0.000 description 3
- 239000004368 Modified starch Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000019426 modified starch Nutrition 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 239000012265 solid product Substances 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011294 coal tar pitch Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical group [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention relates to a kind of carbide slag (Ca (OH)2) and coke powder (biological burnt, semi-coke) coforming method for preparing calcium carbide, the method is that the calcium carbide ground-slag that will purify and be modified and coke powder organic binder bond coforming prepare carbon containing carbide slag (green-ball), again carbon containing block CaO (ripe ball) is prepared through calcined dehydration solidification, the calorific intensity of the calcium oxide carbonaceous pelletizing at 1000 DEG C is more than 3MPa, and calcium carbide is prepared in 1,800 1900 DEG C of electric furnaces.
Description
Technical field
The present invention is the chemical production technical that carbide slag and coke powder mixing coforming are prepared calcium carbide using organic binder bond.
Background technology
Calcium carbide is the important industrial chemicals for producing acetylene, with PVC industries development, calcium carbide base PVC accounts for total output
70% or so, in recent years calcium carbide yield constantly increase, its yield in 2013 is up to 22,340,000 tons.The master of calcium carbide is industrially prepared at present
It is electrothermal way to want method：With block calcium oxide and block coke as raw material, using electric heating stove heat mixed material to 2000-2200
DEG C, generate molten state calcium carbide, its reaction equation 3C+CaO=CaC through a few hours2+CO.This technique has the following disadvantages：1st, raw material block
Prepared by shape quick lime need to calcine a large amount of fat lime stone (high-purity C aCO3)；2nd, coke price is expensive, and in coke clamp dog process
Middle to produce a considerable amount of coke blackings (semi-coke powder) that directly use, cost of material is high；3rd, this calcium carbide preparation process is solid
The phase endothermic reaction, two reactants are bulk, and response area is small so that raw material mass transfer, heat transfer efficiency are low, cause energy consumption higher.
1 ton of calcium carbide is often used, 1.2 tons of butt carbide slag is produced, more than 18,000,000 tons, it leads the annual carbide slag yield of China
It is calcium hydroxide (Ca (OH) to want composition2).The stacking of a large amount of carbide slags, not only land occupation, but also pollute environment.It is electric at present
Rock ballast the general chemical such as quick lime product and prepares nano-calcium carbonate mainly for the production of construction materials such as cement, and for producing
The high-end products such as calcium.
The present invention proposes a kind of organic matter binding agent of adding and strengthens the method that carbide slag prepares calcium carbide with coke powder coforming,
The requirement of the requirement according to furnace of calcium carbide to block, especially block purity, activity and calorific intensity.Emphasis of the present invention solves calcium carbide
Slag prepares the purity of calcium carbide, activity and calorific intensity with coke powder coforming, by adding organic binder bond and calcine technology, reduces
Purity and follow-up energy consumption problem that inorganic binder brings, improve purity, the active and calorific intensity of block after shaping.By electricity
The utilization of rock ballast and coke powder, realizes a large amount of the dissolving of carbide slag and is recycled with a large amount of of CaO.The heat of block is wherein improved simultaneously
Intensity and activity are characteristic of the invention and innovative point.
Beijing Shen Wu energy environments Science and Technology Ltd. develops a series of utilization coal dusts and is prepared containing CaO with CaO copyrolysis
Coke, [201310728118.1] invention proposes and for mixed material to carry out forming processes, block semicoke is obtained, while obtaining
High heating value forming gas, tar and pyrolysis solid product, wherein, the pyrolysis solid product contains coke, semicoke and quick lime,
Solid product is pyrolyzed simultaneously to be input into electric arc furnaces when temperature is not less than 450 DEG C, to carry out metallurgy in electric arc furnaces,
And obtain calcium carbide.Due to the use of coal dust, especially for tar to be prepared, cause the calorific intensity containing CaO coke complete
Disappear.And instant invention overcomes the not enough problem of block intensity, clinker intensity at normal temperatures is maintained, and then maintain
Ripe ball calorific intensity at high temperature, it is using organic binder bond and the distinctive wettability of coke powder and hot strong after hot setting
Degree, is greatly improved the calorific intensity and furnace-mixing rate of ripe ball.
In addition, a kind of method that CaO mixes, prepares calcium carbide with carbonaceous material has been invented by Chongqing Architectural Engineering College
[88100821.4], in order to improve the intensity of ripe ball, its firing temperature is higher, at 1200 DEG C or so, although ripe ball calorific intensity has
It is certain to improve, but because CaO high temperature sinterings decline to its activity is rapid.And the present invention is in order to improve ripe ball calorific intensity, not shadow
Sound ripe ball activity, it is proposed that using the method for carbide slag after purification and semi-coke powder coforming, prepares high-heat strength and high activity
Carbon containing CaO pelletizings, sintering temperature is lower, and ripe ball activity is higher, and its reason is to form water vapour, water vapour after carbide slag is calcined
On the one hand coke powder has been activated, has on the one hand inhibited the sintering of CaO.[93112800.5] invent a kind of carbide slag and prepare carbonization Jiao
The method of ball, in order to increase the intensity after shapings of the CaO with coke powder, although the method coats generation on carbon containing CaO pellets
One layer of CaCO3But, at a temperature of 2000 DEG C or so of calcium carbide production, its calorific intensity still declines rapidly, because calcium carbonate
Decomposition temperature be 850 degree, therefore the calorific intensity of the carbonized coke ball still cannot ensure that calcium carbonate can also into furnace of calcium carbide in addition
Consume the heat of a part of electric furnace.[2009103110608.3] invent a kind of white lime and prepare the side of calcium carbide block with coke powder
Method, although the method also has shaping and stoving process, but its intensity for entering stokehold block still cannot meet wanting for furnace of calcium carbide
Ask, especially the stoving process at 500 DEG C, is actually changed into CaO by white lime, and the patent does not refer to CaO and Jiao
The intensity of powder, applicant's previous experiments show CaO easy aquations in atmosphere, cause carbon containing CaO pellet strengths to disappear.Therefore with
Above mentioned several patents of invention are compared, and the present invention has salient feature：(1) the cold of ripe ball is improved using organic binder bond
Calorific intensity, by further improving organic binder bond calorific intensity at high temperature after calcining.(2) carbide slag and coke powder are utilized, is filled
Divide using calcium carbide enterprise existing resource, realize energy-conservation and reduce the discharge of solid waste.(3) by low temperature calcination can activate coke powder and
CaO, improves coke powder activity, and prevent the sintering of CaO from causing activity decrease.
The content of the invention
The technology of the present invention solve problem：Overcome the deficiencies in the prior art, there is provided a kind of carbide slag (Ca (OH)2) and coke powder
(biological burnt, semi-coke) method that coforming prepares calcium carbide, is the calcium carbide ground-slag and coke powder organic binder bond that will be purified and be modified
Coforming prepares carbon containing carbide slag (green-ball), then prepares carbon containing block CaO (ripe ball) through calcined dehydration solidification, and the calcium oxide is carbon containing
Calorific intensity of the pelletizing at 1000 DEG C is more than 3MPa, and calcium carbide is prepared in 1800-1900 DEG C of electric furnace.
The technology of the present invention solution：Calcium carbide ground-slag to purifying is modified, and by modified calcium carbide ground-slag, coke powder
Stirring is sufficiently mixed with organic binder bond and water, the balling-up agglomerate that then pressurizes prepares carbon containing carbide slag-green-ball；Green-ball is first
By oxidation drying control, then calcining control acquisition CaO carbonaceous pelletizings-ripe ball is carried out, calcining after-ripening ball is substituted into traditional block,
For producing calcium carbide.
Modifying agent for calcium carbide ground-slag uses acid or acid salt；The acid is selected from by hydrochloric acid, nitric acid, phosphoric acid, acetic acid, sulphur
One or two in acid, the acid salt is selected from by NaHSO4、NaH2PO4、NaHSO3、Ca(H2PO4)2、Na2HPO4、
CaHPO4、Ca3(PO4)2In one or two.
The consumption of the acid or acid salt is the 0.5~3% of calcium carbide ground-slag gross mass.
The carbide slag powder and coke powder need to grind and sieve, and its granularity is less than 3mm, preferably smaller than 1mm.
The organic binder bond elects starch, cellulose, coal tar, mink cell focus, cracked oil, coking coal, pitch class, rubber as
Two or more combination for constituting in class, phenolic resin class and organic acid, the mass ratio of each component is equal in binding agent
It is 1:1.
The percent mass ratio of the modified carbide slag powder, coke powder, machine binding agent and water：Modified carbide slag:Coke powder:It is organic
Binding agent:Water=10:(2.5-5):(1-3):(0.5-2.5), the addition of organic binder bond is calcium carbide ground-slag and coke powder gross weight
5%-30%, be optimized for 10%-15%；The addition of water is the 3%-20% of calcium carbide ground-slag and coke powder gross weight, preferably
5%-15%.
20~the 50MPa of moulding pressure, preferably 35~50MPa.
The drying control is：Under oxygen atmosphere, 80~180 DEG C are heated to 20 DEG C/min heating rates, constant temperature is done
Dry 120 minutes, temperature was preferably 100-150 DEG C.
The calcining is controlled to：By dried green-ball in 500-700 DEG C of scope calcining at constant temperature 30 minutes, then it is warming up to
Calcining at constant temperature 30 minutes at 800~1000 DEG C, and calcination atmosphere is N2Or CO2Or Ar.
Present invention advantage compared with prior art is：Present invention process is simple, and raw materials used carbide slag, coke powder are
The industry byproduct of calcium carbide, chemical industry or smelter, both turned waste into wealth, and production cost has been saved again.Because between powder raw material
Mix, cold pressing, increased the reaction contact surface between raw material, beneficial to mass transfer, heat transfer, reduce reaction temperature；Because difference is organic
High temperature (at 1000 DEG C) calorific intensity that obtained calcium oxide carbonaceous pelletizing possesses under thing binding agent and different process calcinating system,
Increase substantially ripe ball and enter electric furnace ratio, strengthen calcium carbide generation theorem condition, calcium carbide can be generated at 1800-1900 DEG C, it is real
The energy-conservation of existing calcium carbide production process.
Brief description of the drawings
Fig. 1 is schematic flow sheet of the invention；
Fig. 2 is the green-ball prepared after carbide slag and powdered coke shaping；
The influence that Fig. 3 is binding agent and technique to calorific intensity at 1000 DEG C of carbon containing calcium oxide pelletizing；
Fig. 4 is the calcium carbide XRD analysis prepared using carbon containing calcium oxide pelletizing.
Specific embodiment：
The invention provides a kind of method that utilization carbide slag and coke powder coforming prepare calcium carbide.The method is to carry first
Carbide slag after pure is modified, then by modified calcium carbide ground-slag, coke powder, the organic binder bond of proper proportion and a small amount of water
It is well mixed and is press-formed at normal temperatures, then dried by low-temperature oxidation, obtains dry carbon containing carbide slag pelletizing, then
Calcined and calcium oxide carbonaceous pelletizing is obtained.Finally by calcium oxide carbonaceous pelletizing as preparing calcium carbide in electric furnace, its calcium carbide system
Standby flow is shown in Fig. 1.Fig. 2 is the carbide slag carbonaceous pelletizing of acquisition in preparation process.Fig. 3 is that different binding agents and different process are calcined
High temperature (at 1000 DEG C) calorific intensity of calcium oxide carbonaceous pelletizing obtained under system.Fig. 4 is the heat at 1000 DEG C of one of which
The XRD analysis of the calcium carbide that calcium oxide carbonaceous pelletizing of the intensity more than 3MPa is prepared at 1700 DEG C.
Below in conjunction with the accompanying drawings and specific embodiment is discussed in detail the present invention.But following embodiment is only limitted to explain this hair
Bright, protection scope of the present invention should include the full content of claim, be not limited only to the present embodiment.
Embodiment 1
By the carbide slag (Ca (OH) after physics removal of impurities2Purity is divided more than 95%) crushing, sieving with sieve focusing dressing sieve,
The granularity of two raw materials is set to be 0.2mm.
To the acetic acid of addition 1.5% in the calcium carbide ground-slag of above-mentioned granularity, it is sufficiently stirred for, then with coke powder according to 4:1 matter
Amount ratio carries out dispensing, then add account for respectively mixed material weight than 20% modified starch and 6% water, be sufficiently stirred for equal
It is even.
The material of mixing is placed on cold moudling (briquetting pressure is 45MPa) in embedding model machine, the cylinder green-ball of 30g is obtained, it is raw
The cold strength of ball is more than 10MPa.This green-ball is placed in the drying box for being connected with oxygen, is heated to 20 DEG C/min heating rates
100 DEG C, freeze-day with constant temperature 120 minutes.
Dried green-ball is placed in Muffle furnace and is warming up to 550 DEG C of calcining at constant temperature 30 minutes, then at being warming up to 950 DEG C it is permanent
Temperature calcining 30 minutes, and calcination atmosphere is N2Or CO2Or Ar.
By the pelletizing block (ripe ball) after calcining in N2Under atmosphere and in 1000 DEG C of constant temperature 5 minutes, measuring high temperature hot strength is
2.81MPa (second sample in Fig. 3).
Ripe ball is cooled to 100 DEG C or so, then is put into electric furnace, reacted 40 minutes at 1800 DEG C, obtain calcium carbide, such as
Fig. 4 is analyzed.
Embodiment 2
White lime is crushed, is sieved, with sieve focusing dressing sieve point, the granularity of two raw materials is 0.2mm.To above-mentioned granularity
White lime in addition 1.5% Ca (H2PO4)2, it is sufficiently stirred for, then with coke powder according to 7:3 mass ratio carries out dispensing, then
Addition accounts for modified starch of the mixed material weight than 20% and 6% water respectively, stirs.
The material of mixing is placed on cold moudling (briquetting pressure is 45MPa) in embedding model machine, the cylinder green-ball of 30g is obtained.Will
This green-ball is placed in the drying box for being connected with oxygen, and 120 DEG C, freeze-day with constant temperature 120 minutes are heated to 20 DEG C/min heating rates.
Dried green-ball is placed in Muffle furnace and is warming up to 600 DEG C of calcining at constant temperature 30 minutes, then be warming up at 1000 DEG C
Calcining at constant temperature 30 minutes, and calcination atmosphere is N2Or CO2Or Ar.
By the pelletizing block (ripe ball) after calcining in N2Under atmosphere and in 1000 DEG C of constant temperature 5 minutes, measuring high temperature hot strength is
4.92MPa (the 4th sample in Fig. 3).
Ripe ball is cooled to 100 DEG C or so, then is put into furnace of calcium carbide, reacted 40 minutes at 1900 DEG C, obtain calcium carbide,
Such as Fig. 4 analyses.
Embodiment 3
By the carbide slag (Ca (OH) after physics removal of impurities2Purity is divided more than 95%) crushing, sieving with sieve focusing dressing sieve,
The granularity of two raw materials is set to be 0.15mm.
To the acetic acid of addition 1.5% in the calcium carbide ground-slag of above-mentioned granularity, it is sufficiently stirred for, then with coke powder according to 7:3 matter
Amount ratio carries out dispensing, then adds and account for ethene coal tar of the mixed material weight than 10%, coal tar and coal tar pitch and account for mixing
Water of the weight of material than 5%, stirs.
The material of mixing is placed on cold moudling (briquetting pressure is 45MPa) in embedding model machine, the cylinder green-ball of 30g is obtained.Will
This green-ball is placed in the drying box for being connected with oxygen, and 100 DEG C, freeze-day with constant temperature 120 minutes are heated to 20 DEG C/min heating rates.
Dried green-ball is placed in Muffle furnace and is warming up to 550 DEG C of calcining at constant temperature 30 minutes, then at being warming up to 950 DEG C it is permanent
Temperature calcining 30 minutes, and calcination atmosphere is N2Or CO2Or Ar.
By the pelletizing block (ripe ball) after calcining in N2Under atmosphere and in 1000 DEG C of constant temperature 5 minutes, measuring high temperature hot strength is
2.72MPa (the 9th sample in Fig. 3).
Ripe ball is cooled to 100 DEG C or so, then is put into furnace of calcium carbide, reacted 40 minutes at 1900 DEG C, obtain calcium carbide
(Fig. 4 analyses).
Embodiment 4
White lime is crushed, is sieved, with sieve focusing dressing sieve point, the granularity of two raw materials is 0.2mm.
To the phosphoric acid of addition 1.5% in the white lime of above-mentioned granularity, it is sufficiently stirred for, then with coke powder according to 2:1 quality
Than carrying out dispensing, then add and account for ethene coal tar of the mixed material weight than 10%, coal tar and coal tar pitch and account for mixture
Material water of the weight than 5%, stirs.
The material of mixing is placed on cold moudling (briquetting pressure is 45MPa) in embedding model machine, the cylinder green-ball of 30g is obtained.Will
This green-ball is placed in the drying box for being connected with oxygen, and 150 DEG C, freeze-day with constant temperature 120 minutes are heated to 20 DEG C/min heating rates.
Dried green-ball is placed in Muffle furnace and is warming up to 600 DEG C of calcining at constant temperature 30 minutes, then be warming up at 1000 DEG C
Calcining at constant temperature 30 minutes, and calcination atmosphere is N2Or CO2Or Ar.
By the pelletizing block (ripe ball) after calcining in N2Under atmosphere and in 1000 DEG C of constant temperature 5 minutes, measuring high temperature hot strength is
2.73MPa (the 10th sample in Fig. 3).
Ripe ball is cooled to 100 DEG C or so, then is put into furnace of calcium carbide, reacted 40 minutes at 1800 DEG C, obtain calcium carbide
(such as Fig. 4 analyses).
Embodiment 5
By the carbide slag (Ca (OH) after physics removal of impurities2Purity is divided more than 95%) crushing, sieving with sieve focusing dressing sieve,
The granularity of two raw materials is set to be 0.15mm.
To the phosphoric acid of addition 1.5% in the calcium carbide ground-slag of above-mentioned granularity, it is sufficiently stirred for, then with coke powder according to 7:3 matter
Amount ratio carries out dispensing, then adds the water for accounting for modified starch 12% of the mixed material weight than 15% respectively, stirs.
The material of mixing is placed on cold moudling (briquetting pressure is 45MPa) in embedding model machine, the cylinder green-ball of 30g is obtained.Will
This green-ball is placed in the drying box for being connected with oxygen, and 120 DEG C, freeze-day with constant temperature 120 minutes are heated to 20 DEG C/min heating rates.
Dried green-ball is placed in Muffle furnace and is warming up to 600 DEG C of calcining at constant temperature 30 minutes, then at being warming up to 950 DEG C it is permanent
Temperature calcining 30 minutes, and calcination atmosphere is N2Or CO2Or Ar.
By the pelletizing block (ripe ball) after calcining in N2Under atmosphere and in 1000 DEG C of constant temperature 5 minutes, measuring high temperature hot strength is
3.99MPa (the 12nd sample in Fig. 3).
Ripe ball is cooled to 100 DEG C or so, then is put into furnace of calcium carbide, reacted 40 minutes at 1900 DEG C, obtain calcium carbide,
Such as Fig. 4 analyses.
Embodiment 6
White lime is crushed, is sieved, with sieve focusing dressing sieve point, the granularity of two raw materials is 0.2mm.
To the NaHSO of addition 1.5% in the white lime of above-mentioned granularity4, it is sufficiently stirred for, then with coke powder according to 3:1 matter
Amount ratio carries out dispensing, then adds and account for coal tar of the mixed material weight than 20% and 10% water respectively, stirs.
The material of mixing is placed on cold moudling (briquetting pressure is 45MPa) in embedding model machine, the cylinder green-ball of 30g is obtained.Will
This green-ball is placed in the drying box for being connected with oxygen, and 150 DEG C, freeze-day with constant temperature 120 minutes are heated to 20 DEG C/min heating rates.
Dried green-ball is placed in Muffle furnace and is warming up to 650 DEG C of calcining at constant temperature 30 minutes, then be warming up at 1000 DEG C
Calcining at constant temperature 30 minutes, and calcination atmosphere is N2Or CO2Or Ar.
By the pelletizing block (ripe ball) after calcining in N2Under atmosphere and in 1000 DEG C of constant temperature 5 minutes, measuring high temperature hot strength is
7.86MPa (the 11st sample in Fig. 3).
Ripe ball is cooled to 100 DEG C or so, then is put into furnace of calcium carbide, reacted 40 minutes at 1800 DEG C, obtain calcium carbide
(such as Fig. 4 analyses).
It should be noted that according to the various embodiments described above of the present invention, those skilled in the art are can to realize this hair completely
The four corner of bright independent claims and appurtenance, implementation process and the same the various embodiments described above of method；And the present invention is not
Elaborate and partly belong to techniques well known.
The above, part specific embodiment only of the present invention, but protection scope of the present invention is not limited thereto, and appoints
What those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered
Within protection scope of the present invention.
Claims (1)
1. a kind of method that carbide slag and coke powder coforming prepare calcium carbide, it is characterised in that：Calcium carbide ground-slag to purifying changes
Property, and modified calcium carbide ground-slag, coke powder and organic binder bond and water are sufficiently mixed stirring, it is prepared by the balling-up agglomerate that then pressurizes
Go out carbon containing carbide slag-green-ball；Green-ball first passes around oxidation drying control, then carries out calcining control and obtain CaO carbonaceous pelletizings-ripe
Ball, substitutes traditional block, for producing calcium carbide by calcining after-ripening ball；
Modifying agent for calcium carbide ground-slag uses acid or acid salt, and the acid is selected from by hydrochloric acid, nitric acid, phosphoric acid, acetic acid, sulfuric acid
One or two, the acid salt be selected from by NaHSO4、NaH2PO4、NaHSO3、Ca(H2PO4)2、Na2HPO4、CaHPO4、Ca3
(PO4)2In one or two；
The consumption of the acid or acid salt is the 0.5~3% of calcium carbide ground-slag gross mass；
The organic binder bond is starch, cellulose, coal tar, mink cell focus, cracked oil, coking coal, pitch class, rubber-like, phenolic aldehyde
Two or more combination for constituting in resinae and organic acid, the mass ratio of each component is 1 in binding agent:1；
The mass ratio of the modified carbide slag powder, coke powder, organic binder bond and water：Modified carbide slag powder:Coke powder:Organic adhesive
Agent:Water=10:(2.5-5):(1-3):(0.5-2.5), the addition of organic binder bond is modified carbide slag powder and coke powder gross weight
10%-15%；The addition of water is the 5%-15% of modified carbide slag powder and coke powder gross weight；
The pressurization balling-up agglomerate prepares the 35~50MPa of moulding pressure in carbon containing carbide slag,
The carbide slag powder and coke powder need to grind and sieve, and its granularity is less than 3mm；
The drying control is：Under oxygen atmosphere, 80~180 DEG C, freeze-day with constant temperature 120 are heated to 20 DEG C/min heating rates
Minute, temperature is 100-150 DEG C；
The calcining is controlled to：By dried green-ball in 500-700 DEG C of scope calcining at constant temperature 30 minutes, then it is warming up to 800~
Calcining at constant temperature 30 minutes at 1000 DEG C, and calcination atmosphere is N2Or CO2Or Ar；
Calorific intensity of the calcium oxide carbonaceous pelletizing at 1000 DEG C is more than 3MPa, and calcium carbide is prepared in 1800-1900 DEG C of electric furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129164.9A CN104828824B (en) | 2015-03-24 | 2015-03-24 | A kind of method that carbide slag prepares calcium carbide with coke powder coforming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510129164.9A CN104828824B (en) | 2015-03-24 | 2015-03-24 | A kind of method that carbide slag prepares calcium carbide with coke powder coforming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104828824A CN104828824A (en) | 2015-08-12 |
| CN104828824B true CN104828824B (en) | 2017-06-13 |
Family
ID=53807088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510129164.9A Expired - Fee Related CN104828824B (en) | 2015-03-24 | 2015-03-24 | A kind of method that carbide slag prepares calcium carbide with coke powder coforming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104828824B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905904B (en) * | 2016-04-19 | 2018-07-24 | 神雾环保技术股份有限公司 | Compound binding agent and utilize compound binding agent carry out the molding method of carbide raw material |
| CN105778963A (en) * | 2016-04-27 | 2016-07-20 | 神雾环保技术股份有限公司 | Compound adhesive and application thereof in cold-state molding of semicoke and quick lime |
| CN105819447A (en) * | 2016-05-31 | 2016-08-03 | 中国科学院过程工程研究所 | High-thermal-intensity CaO carbon-containing pellets and preparation method and application thereof |
| CN107473225A (en) * | 2016-06-08 | 2017-12-15 | 神雾环保技术股份有限公司 | Prepare the system and method for calcium carbide |
| CN106010355A (en) * | 2016-06-24 | 2016-10-12 | 北京神雾环境能源科技集团股份有限公司 | Binder additive and method for preparing calcium carbide by applying binder additive |
| CN106006642A (en) * | 2016-06-27 | 2016-10-12 | 贵州大学 | Method for producing calcium carbide by powdery calcium oxide |
| CN106118780A (en) * | 2016-07-21 | 2016-11-16 | 北京神雾环境能源科技集团股份有限公司 | A kind of long flame coal dust and the forming method of calcium lime powder |
| CN106564900B (en) * | 2016-11-07 | 2019-03-29 | 中国石油大学(华东) | A kind of cooling calcium carbide powder technique processed of the molten state calcium carbide of clean and effective safety |
| CN106517203B (en) * | 2016-11-09 | 2018-05-25 | 重庆鸿庆达产业有限公司 | A kind of system for producing calcium carbide |
| CN106517204A (en) * | 2016-11-16 | 2017-03-22 | 神雾环保技术股份有限公司 | Special system and method for forming calcium carbide raw material |
| CN106927699B (en) * | 2017-03-09 | 2019-05-17 | 王光建 | A method of calcium carbide lime is prepared using carbide slag |
| CN106938847A (en) * | 2017-03-30 | 2017-07-11 | 神雾环保技术股份有限公司 | The system and method that a kind of utilization carbide slag prepares calcium carbide smelting palletizing with lignite |
| CN107010627B (en) * | 2017-04-11 | 2020-12-25 | 北京柯林斯达科技发展有限公司 | Method for producing pellet calcium carbide raw material by recycling calcium carbide furnace gas fly ash, semi coke powder and quicklime powder |
| CN107129792A (en) * | 2017-04-20 | 2017-09-05 | 神雾环保技术股份有限公司 | The method of compound binding agent and preparation production calcium carbide mixing pelletizing |
| CN107572527A (en) * | 2017-08-10 | 2018-01-12 | 神雾环保技术股份有限公司 | The method for preparing production calcium carbide pelletizing |
| CN108483477B (en) * | 2018-07-03 | 2020-09-01 | 中国科学院过程工程研究所 | Method for preparing active calcium oxide by using carbide slag |
| CN109233931B (en) * | 2018-09-29 | 2021-10-08 | 宁夏英力特化工股份有限公司 | Method for producing formed coke by adopting semi-coke powder |
| CN111285388A (en) * | 2020-03-24 | 2020-06-16 | 绵阳市安州区银源科技有限公司 | Method for preparing high-purity calcium oxide by using carbide slag |
| CN111591993A (en) * | 2020-05-29 | 2020-08-28 | 陕西臻厚能源科技有限公司 | Method for producing blocky calcium oxide by using carbide slag |
| CN112745042B (en) * | 2021-02-01 | 2022-07-22 | 新疆中泰创安环境科技股份有限公司 | Calcium carbide press balls for recycling ultrafine calcium oxide powder calcined by wet-process calcium carbide slag and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458063A (en) * | 2003-05-30 | 2003-11-26 | 樊张帆 | Process for preparing high calcium carbide product and producing calcium carbide carbide using calcium carbide waste slag |
| CN101037202A (en) * | 2007-02-09 | 2007-09-19 | 李建华 | Calcium carbide slag powder and application thereof |
| CN101182171A (en) * | 2007-11-16 | 2008-05-21 | 南京工业大学 | Catalytic gluing carbide slag brick |
| CN102776047A (en) * | 2012-07-10 | 2012-11-14 | 中国科学院过程工程研究所 | Binder and method for molding calcium-base industrial powder based on binder |
| CN103272536A (en) * | 2012-06-21 | 2013-09-04 | 北京化工大学 | Composite bed reactor and method for combined production of calcium carbide, gas and tar |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653403B (en) * | 2012-05-17 | 2014-10-15 | 五冶集团成都节能工程技术服务有限公司 | Process method for preparing calcium carbide by recycling calcium carbide slag |
-
2015
- 2015-03-24 CN CN201510129164.9A patent/CN104828824B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458063A (en) * | 2003-05-30 | 2003-11-26 | 樊张帆 | Process for preparing high calcium carbide product and producing calcium carbide carbide using calcium carbide waste slag |
| CN101037202A (en) * | 2007-02-09 | 2007-09-19 | 李建华 | Calcium carbide slag powder and application thereof |
| CN101182171A (en) * | 2007-11-16 | 2008-05-21 | 南京工业大学 | Catalytic gluing carbide slag brick |
| CN103272536A (en) * | 2012-06-21 | 2013-09-04 | 北京化工大学 | Composite bed reactor and method for combined production of calcium carbide, gas and tar |
| CN102776047A (en) * | 2012-07-10 | 2012-11-14 | 中国科学院过程工程研究所 | Binder and method for molding calcium-base industrial powder based on binder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104828824A (en) | 2015-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104828824B (en) | A kind of method that carbide slag prepares calcium carbide with coke powder coforming | |
| CN101468792B (en) | Novel technique for producing sulfur from industrial waste gypsum | |
| CN101172605B (en) | Method for producing calcium carbide | |
| CN103708455A (en) | Method for preparing calcium carbide | |
| CN107254585B (en) | A method of recycling zinc, indium, iron, gallium from iron vitriol slag | |
| CN103466661B (en) | One kind utilizes potassium feldspar calcium sulfate mineralising CO2The method of co-producing sulfuric acid potassium | |
| CN102584316A (en) | Preparation method for electrolytic manganese residue porous ceramics | |
| WO2017016062A1 (en) | Low-calcium silicate cement, and preparation method and hardening method thereof | |
| CN103708456A (en) | Method for preparing calcium carbide | |
| CN103796366A (en) | Airtight electrode paste and manufacturing method thereof | |
| CN102701164A (en) | Processing method for preparing phosphate rock powder into pellet yellow phosphorus charge | |
| CN109455733A (en) | A kind of method of gangue electrothermal way preparation high-quality mullite | |
| CN107299218B (en) | A kind of iron vitriol slag desulfurization pelletizing, preparation and its application | |
| CN105819447A (en) | High-thermal-intensity CaO carbon-containing pellets and preparation method and application thereof | |
| CN101864333A (en) | High-efficiency activated binder special for steel plant | |
| CN107285778A (en) | A kind of preparation method of high temperature resistant forsterite type refractory material | |
| CN101428808A (en) | Method for synthesizing dichroite with solid castoff | |
| CN106186740A (en) | A kind of method utilizing magnesite concentrate one one-step baking highly-purity magnesite | |
| CN102745701A (en) | Method for preparing synthetic forsterite from boron slurry | |
| CN106010707A (en) | Forming method of semicoke powder and quicklime powder | |
| CN103708460A (en) | Method for preparing calcium carbide | |
| CN103708459B (en) | Prepare the method for calcium carbide | |
| CN112591723A (en) | Method for producing powdered rock phosphate pellets by using low-grade powdered rock phosphate | |
| CN103266230B (en) | Vanadium-containing stone coal shaft furnace oxygen-rich roasting system and method thereof | |
| CN110627119B (en) | Preparation of chlorination-process TiO by using titanium-containing fine powder2Method for preparing raw material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |