CN108706586A - A method of compound block is suppressed using semicoke and quick lime - Google Patents
A method of compound block is suppressed using semicoke and quick lime Download PDFInfo
- Publication number
- CN108706586A CN108706586A CN201810587515.4A CN201810587515A CN108706586A CN 108706586 A CN108706586 A CN 108706586A CN 201810587515 A CN201810587515 A CN 201810587515A CN 108706586 A CN108706586 A CN 108706586A
- Authority
- CN
- China
- Prior art keywords
- powder
- semicoke
- fine particles
- compound block
- particles containing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/942—Calcium carbide
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of methods for suppressing compound block using semicoke and quick lime, semicoke and quick lime are pressed by compound block using compound binding agent, calcareous powder is molding matrix in the compound block of compression moulding of the present invention, itself has preferable processability, and fine particles containing carbon plays the role of inert filler；Coupling agent forced fluid is added with respect to the binding force of the wetting effect and fine particles containing carbon and calcareous powder on fine particles containing carbon surface, the intensity of block can be effectively improved；The high temperature that binder used can bear 1000 DEG C or more does not decompose, fine particles containing carbon can be bonded simultaneously and calcareous powder improves the intensity of compound block, it can be used not only for the composite molding of semicoke and quick lime powder, there is good effect to the composite molding of fine particles containing carbon and calcareous powder, wide adaptation range can efficiently use discarded powder, reduce its initial reaction temperature, so the energy consumption of calcium carbide reaction can be further decreased, increase economic efficiency.
Description
Technical field
The invention belongs to the recycling fields of calcareous powder and fine particles containing carbon, and in particular to a kind of using semicoke and raw stone
The method that ash suppresses compound block.
Background technology
Crude oil price maintains low level, the cost of material of oil ethyl-acetylene to be greatly reduced for a long time in recent years, and PVC demands are low in addition
Fan so that the long-term pressure-bearing of calcium carbide price.Some areas calcium carbide producer price in 2016 breaks 2000 yuan by a fall, creates the new lowest record in history, causes big
The calcium carbide appearance of enterprise of amount loses.The calcium carbide yield and production capacity in 95% or more the whole world all concentrate on China, China in 2016 at present
There are family more than 220 of calcium carbide producer, more than 4,500 ten thousand tons of calcium carbide production capacity, nearly 26,000,000 tons of yield.Therefore carrying out technological improvement reduces production
Cost helps calcium carbide enterprise to break away from current predicament, has great economy and social effect.
The raw material of the calcium carbide of China's production at present is mainly that semicoke (also referred to as semi-coke) and quick lime, cost account for being produced into
This 40% or so.The furnace of calcium carbide for producing calcium carbide is fixed bed reactors, used to ensure that calcium carbide furnace gas can pass through the bed of material to be discharged
Semicoke and quick lime must be block.Can all there be 20% or so powder production in normal semicoke and quick lime production process
Raw, this part powder is substantially waste treatment at present, this not only so that increased production cost but also had caused serious environmental pollution.
Because binding force is weak between quick lime powder and semicoke powder, the powder that calcium carbide producer generates in being produced to raw material at present is mostly to separate place
Reason, wherein calcium lime powder direct one pack system binder free extrusion forming, gained block are mostly used for steel and power plant, and semi-coke powder
It is then to be directly used in power plants generating electricity purposes more.The powder composite molding side that document report is crossed at present is Hunan Vinylon Factory in the eighties
The calcium lime powder and coke blacking composite molding technique of exploitation, process program are that coke blacking is incorporated postdigestive calcium lime powder
In, it then adds binder and is uniformly mixed laggard ball press pressure ball, finally carbonated green-ball at 140 DEG C or so using heat smoke
At the ripe ball of calcium carbonate.The skeleton structure of calcium carbonate ensure that the cold strength of compound block, but because the starting of calcium carbonate is decomposed
Temperature only has 800 DEG C, so carbon dioxide and dusting, therefore the composite block can be precipitated in the compound block in the bed of material of furnace of calcium carbide
Material molding scheme does not have producing feasibility, and industrial applications are finally also not implemented.Semi-coke powder in fine particles containing carbon and coke blacking
Surface is difficult to be flooded profit and the micro- interparticle cohesion of calcareous powder is weak, and the intensity of block can be seriously affected after molding.
Invention content
In order to solve problems of the prior art, it is pressed into using semicoke and quick lime the invention discloses a kind of
The production method of compound block；The composite molding that can be used not only for semicoke and quick lime powder, using compound binding agent by semicoke
It is pressed into compound block with quick lime to bond, it is being carried out to be pressed into block, to the fine particles containing carbons such as coal dust, coke blacking and hydrogen-oxygen
The composite molding for changing the calcareous powders such as calcium, carbide slag has good effect, solves problem of the prior art.
To achieve the goals above, the technical solution adopted by the present invention is, a kind of compound using semicoke and quick lime compacting
The method of block, which is characterized in that include the following steps：
Step 1 crushes calcareous powder and fine particles containing carbon, and by after crushing calcareous powder and fine particles containing carbon do respectively
It is dry, so that its moisture is reached 15% or less；
Step 2 weighs calcareous powder and fine particles containing carbon according to set mass ratio respectively, and according to calcareous powder and carbon containing
The gross mass of powder and the ratio requirement of binder weigh the required binder amount added；
Step 3 is configured to coupling agent solution by coupling agent is soluble in water by specified proportioning；
Step 2 is taken calcareous powder, fine particles containing carbon and binder to be uniformly mixed in a mixer by step 4；It is mixed
Clutch synchronizes coupling agent solution made of sprinkling step 3 during being stirred material；
Step 4 gained mixed material is press-formed by step 5, you can obtains compound block product, referred to as raw material；
Step 6 converts step 5 gained raw material to clinker.
Calcareous powder described in step 1 include it is one or more in calcium hydroxide, calcium oxide, carbide slag, it is described carbon containing
Powder includes the one or more of coal dust, semi-coke powder and coke blacking.
The mass fraction of calcareous powder is 30%~100% in compound block in step 2, and the mass fraction of fine particles containing carbon is not
More than 70%, the total mass fraction of calcareous powder and fine particles containing carbon is 100%.
Powder used in compound block is calcium oxide and semicoke powder in step 2, and the two mass ratio is 2.9:1.
Calcium salt or fusing point of the binder described in step 2 using fusing point higher than 1000 DEG C are higher than 1000 DEG C of charcoal based raw material.
Coupling agent employed in step 3 is carboxylate surface active agent, sulfosalt surfactant, ammonium salt surface-active
It is one or more in agent, paper waste class lignin coupling agent, silane coupling agent.
The additive amount of coupling agent is no more than the 1% of mixed material weight in step 4.
In step 4, the additive amount of binder is account for powder gross mass 1%~20%.
The line pressure of molding machine two pairs of rollers is 5t/cm-15t/cm in step 5.
In step 6, clinker is converted by raw material using closed roasting to raw material；Or directly raw material are added in furnace of calcium carbide furnace roof
Drying and dehydrating is realized in glassware and tremie pipe, and clinker is then converted into furnace of calcium carbide.
Compared with prior art, the present invention at least has the advantages that：The present invention uses compound binding agent by semicoke
Be pressed into the production method of compound block with quick lime, can be used not only for the composite molding of semicoke and quick lime powder, to coal dust,
The composite molding of the calcareous powder such as the fine particles containing carbons such as coke blacking and calcium hydroxide, carbide slag has good effect, has fine
Adaptability to raw materials, 20% discarded powder can be efficiently used, and because have between semi-coke powder and calcium lime powder in compound block
Validity response area is big, greatly reduces its initial reaction temperature, so the energy consumption of calcium carbide reaction can be further decreased, improves economical
Benefit；Calcareous powder is molding matrix in the compound block of compression moulding of the present invention, itself has preferable processability, and
Fine particles containing carbon plays the role of inert filler.Wetting effect of the coupling agent forced fluid with respect to fine particles containing carbon surface is added and contains
The binding force of carbon dust material and calcareous powder can effectively improve the intensity of block；The present invention is using calcium silicates, calcium phosphate, calcium aluminate
Or coal tar pitch, as binder, the high temperature that the binder can bear 1000 DEG C or more does not decompose, while can bond fine particles containing carbon
The intensity of compound block is improved with calcareous powder.
Description of the drawings
Fig. 1 is the process flow diagram of the present invention.
Specific implementation mode
The present invention is to solve calcium oxide, calcium hydroxide, carbide slag and coal dust of the granularity less than 5mm, semi-coke powder and coke
The problem of powder is difficult to be utilized provides a kind of method for suppressing compound block using semicoke and quick lime, is higher than 1000 using fusing point
DEG C binder, the use of the binder can make the calorific intensity for effectively improving block, make up to calcium carbide production to block
Intensity requirement.
Compound block prepared by the present invention is a kind of to suppress calcareous powder and fine particles containing carbon after evenly mixing in proportion
Molding mixture itself has a preferable processability wherein calcareous powder is molding matrix, and fine particles containing carbon play it is lazy
The effect of property filler；Calcareous powder used includes the 5mm calcic raw materials below generated in production, including calcium hydroxide, oxygen
Change calcium and carbide slag；Fine particles containing carbon used includes 5mm coal dusts below, semi-coke powder and coke blacking.
Compound block after molding will bear 1000 DEG C or more of high temperature without bursting in furnace of calcium carbide, it is therefore necessary to
With good calorific intensity.To improve compound block calorific intensity, coupling agent and binder, the wherein work of coupling agent are introduced respectively
With being the surface nature for changing powder, increases the micro force between fine particles containing carbon and calcareous raw material, improve filler and molding
The bond strength of matrix；The effect of binder is to form high intensity skeleton under the high temperature conditions to increase the hot strong of compound block
Degree, binder are the key that obtain high-strength composite block.
The binder is that fusing point is higher than 1000 DEG C of solid matter, and the liquid of coupling agent to be polymer substance be dissolved in water
Solid binder is first dispersed in mixed powder by phase before molding, and then the coupling agent of wiring solution-forming is added in batch mixing again,
The water content of shaping raw material is also adjusted simultaneously.
Step 1 crushes calcareous powder and fine particles containing carbon, and by moisture control below 15%；By calcareous powder
It is crushed to 5mm or less with fine particles containing carbon；
Step 2 weighs calcareous powder and fine particles containing carbon respectively, and calcareous powder and fine particles containing carbon mass fraction be 30%~
100%, fine particles containing carbon mass fraction is no more than 70%, and the quality summation of the two is 100%；According to calcareous powder and fine particles containing carbon
Gross mass and binder proportioning weigh needed for add binder amount, content of binder be calcareous powder and fine particles containing carbon it is total
The 3-6% of quality；
Step 3 is configured to coupling agent solution by coupling agent is soluble in water in proportion；
Calcareous powder, fine particles containing carbon and binder are uniformly mixed by step 4 in a mixer；Mixer stirs
Coupling agent solution made of synchronous sprinkling step 3 during mixed material；When batch mixing each section uniform moisture, there is no unite
Terminate batch mixing operation when material, the batch mixing obtained at this time can be used as post molding operations raw material；Binder in a certain range
Addition it is more to intensity improve it is more advantageous, but consider economic factor, suitable additive amount be account for powder gross mass 1%~
20%；
Gained mixed material is press-formed by step 5, you can obtains compound block product, referred to as raw material；Industrial two pairs of rollers at
Line pressure should control between 5t/cm~15t/cm on the roller of type machine, and preferred briquetting pressure is 12t/cm, the shape of compound block
Shape is preferably the pillow or oblate spheroid type of 3cm~8cm.
Step 6 carries out subsequent processing to step 5 gained raw material, it is made to be converted into clinker；There are two types of subsequent processing sides for raw material
Case, one is the spare blocks for converting raw material to cooling down operation by closed roasting furnace of calcium carbide, i.e. clinker；The rate of heat addition is
No more than 30 DEG C/min, preferred heating rate is 15 DEG C/min, the final temperature of heating at 900 DEG C ± 50 DEG C, cooling rate and plus
Hot rate is close.Air should be completely cut off as possible after block cooling, otherwise ripe block can absorb water and dusting from air, another scheme
It is directly using raw material as raw material of calcium carbide furnace, raw material are realized dry de- in the top filler and tremie pipe before entering furnace of calcium carbide
Then water completes the conversion to clinker after input furnace of calcium carbide.
The calcareous powder includes one or more in calcium hydroxide, calcium oxide, carbide slag, and the fine particles containing carbon includes
Coal dust, semi-coke powder and coke blacking it is one or more；
The mass fraction of calcareous powder is can be controlled in the range of 30%~100% in compound block, corresponding carbonaceous powder
The mass fraction of material is no more than 70%, and preferred proportioning is that the mass ratio of calcium oxide and semicoke powder is 2.9:1.
The coupling agent include carboxylate, sulfonate and ammonium type surfactant, paper waste class lignin coupling agent,
It is one or more in silane coupling agent；It can select not using coupling agent when carbon raw material ratio is less than 10%.Coupling
The additive amount general control of agent 1% hereinafter, preferred amount is 0.1%~0.3%, it is larger to coal dust and semicoke difference；Work as carbon
Matter raw material can not use coupling agent when the mass ratio in being molded batch mixing is less than 10%.
The binder includes the carbon-based raw material that calcium salt of the fusing point higher than 1000 DEG C or fusing point are higher than 1000 DEG C.
The binder include it is one or more in calcium silicates, calcium aluminate, calcium phosphate, calcium sulfate, kaolin, bentonite,
Carbon-based raw material includes one or more in medium temperature coal pitch, petroleum coke, discarded lubricating grease；The additive amount of binder is to account for powder
The 1%~20% of gross mass, currently preferred, additive amount is 3%~6%.
Embodiment 1
The benzene sulfonic acid sodium salt solution of mass fraction 0.05% is made into coupling agent, using calcium sulfate powder as binder；Hold in mixing
It is separately added into that grain size is 1mm calcium dihydroxide powders 200g below and grain size is 1mm semi-coke powder 84g below in device, at the beginning of the two
The calcium sulfate powder that 28g is added in batch mixing after step mixing continues to be stirred, and the benzene sulfonic acid sodium salt of 8g is finally added in batch mixing
Solution is simultaneously uniformly mixed, until blocky without uniting in batch mixing；The powder that 20g is uniformly mixed is packed into molding die, in 20MPa
Forming under the pressure and pressurize 1min, move back up to molding raw material after mould, gained raw material be divided into several pieces, with reference to industrial shaping coal
The cold strength of cold strength detection method detection gained raw material；Selected section raw material are put into closed in Muffle furnace in alumina crucible
Heating, heating temperature are 800 ± 15 DEG C, and heating rate is 900 DEG C/h, and Muffle stove heat is closed after 800 DEG C of constant temperature 30min certainly
So it is cooled to room temperature to get clinker；It is detected using universal strength tester, pressure-loaded speed selects 10mm/min, gained block
The average cold strength of material has reached 5000 Ns/ball, and the average calorific intensity after 900 DEG C of heat treatments has reached 1400N/ balls；If selection
Dry raw material are put into alumina crucible is heated to 1650 DEG C in high-temperature electric resistance furnace, keeps the temperature natural cooling after 45min, outside gained block
Shape is still complete, and mean intensity is 200N/ balls, and the gas forming amount of draining experiment detection block is about 200L/kg.
Embodiment 2
Using kaolin powder as binder, the paper waste class lignin liquor of mass fraction 0.5% is as coupling
Agent solution.Calcium oxide powder 100g, semi-coke powder 250g, kaolin powder 30g are weighed respectively, in the mixing container by two kinds of powders
It is stirred, and prepared coupling agent solution is weighed into 20g and is uniformly added into；20g powders are weighed every time, in the pressure of 30MPa
It is lower to be molded using molding die, pressurize 1min when molding.The cold strength detection method of gained block is same as Example 1, institute
The cold strength mean value for obtaining block is 3800N/ balls, and calorific intensity mean value reaches 1050N/ balls.
Embodiment 3
Using medium temperature coal pitch powder as binder, it is molten that the benzene sulfonic acid sodium salt solution of mass fraction 0.05% makees coupling agent
Liquid.Calcium oxide powder 80g, northern Shensi jet coal coal dust 250g, medium temperature coal pitch powder 25g are weighed respectively, in the mixing container three
Two kinds of powder stirring mixing, and prepared coupling agent solution 8g is uniformly added into.20g powders are weighed every time, in the pressure of 30MPa
It is molded using molding die under power, pressurize 1min when molding.The cold strength detection method of gained block is same as Example 1,
The cold strength mean value of gained block is 6000N/ balls, and calorific intensity mean value reaches 960N/ balls.
Embodiment 4
Carbide slag powder 200g and semicoke powder 20g, using bentonite as binder, bentonite powder additive amount are weighed respectively
For 6g, three is uniformly mixed in a reservoir, because carbide slag moisture content is higher, coupling agent is not added in the present embodiment.Exist every time
The mixed material that 20g is loaded in molding die, in the forming under the pressure and pressurize 1min of 20MPa.The cold strength of block detects
Method is same as Example 1, the cold strength average out to 10000N/ balls of block, calorific intensity average out to 5100N/ balls.
Embodiment 5, small-scale experiment
Calcium dihydroxide powders grain size from calcium carbide production scene in 1.5mm hereinafter, semicoke grain size in 3mm hereinafter, two kinds
Powder weighs 50kg and 18kg respectively, weighs analytically pure calcium sulfate powder 4kg, and it is uniform that three is put into container for stirring.Make
It uses the papermaking wastewater from paper mill as coupling agent, is slowly added to the solid material in container with front and further mixes, and
It is for use to place 20min.The hydraulic pressure roller briquetting machine for starting 0.5t/h, 8r/min is transferred to by frequency modulation equipment by two pairs of rollers rotating speed, right
Hydraulic pressure between roller is 18MPa, and the rotating speed for feeding preload screw is 15r/min, and the material handled well is poured into from charge door,
The molding block for taking out material interlude detects the cold strength value of block according to the method for embodiment 1.Wherein block is average cold
Degree is 1400N/ balls, and calorific intensity mean value is 850N/ balls.
Protection scope of the present invention is not limited to the above embodiments, those skilled in the art's model specified by the present invention
The transformation of simple technique index and material replacement done in enclosing are included within the scope of the present invention.
Claims (10)
1. a kind of method for suppressing compound block using semicoke and quick lime, which is characterized in that include the following steps：
Step 1 crushes calcareous powder and fine particles containing carbon, and by after crushing calcareous powder and fine particles containing carbon be separately dried, make
Its moisture reaches 15% or less；
Step 2 weighs calcareous powder and fine particles containing carbon according to set mass ratio respectively, and according to calcareous powder and fine particles containing carbon
Gross mass and binder ratio requirement weigh needed for add binder amount；
Step 3 is configured to coupling agent solution by coupling agent is soluble in water by specified proportioning；
Step 2 is taken calcareous powder, fine particles containing carbon and binder to be uniformly mixed in a mixer by step 4；Mixer
Coupling agent solution made of sprinkling step 3 is synchronized during being stirred material；
Step 4 gained mixed material is press-formed by step 5, you can obtains compound block product, referred to as raw material；
Step 6 converts step 5 gained raw material to clinker.
2. the method according to claim 1 for suppressing compound block using semicoke and quick lime, which is characterized in that step 1
Described in calcareous powder include it is one or more in calcium hydroxide, calcium oxide, carbide slag, the fine particles containing carbon include coal dust,
Semi-coke powder and coke blacking it is one or more.
3. the method according to claim 1 for suppressing compound block using semicoke and quick lime, which is characterized in that step 2
In in compound block the mass fraction of calcareous powder be 30%~100%, the mass fraction of fine particles containing carbon is not more than 70%, calcareous
The total mass fraction of powder and fine particles containing carbon is 100%.
4. the method according to claim 1 for suppressing compound block using semicoke and quick lime, which is characterized in that step 2
In powder used in compound block be calcium oxide and semicoke powder, the two mass ratio is 2.9:1.
5. the method according to claim 1 for suppressing compound block using semicoke and quick lime, which is characterized in that step 2
Described in binder the include fusing point calcium salt higher than 1000 DEG C or the charcoal based raw material higher than 1000 DEG C.
6. the method according to claim 1 for suppressing compound block using semicoke and quick lime, which is characterized in that step 3
Employed in coupling agent be carboxylate surface active agent, sulfosalt surfactant, ammonium surfactant, paper waste class
It is one or more in lignin coupling agent, silane coupling agent.
7. the method according to claim 6 for suppressing compound block using semicoke and quick lime, which is characterized in that step 4
The additive amount of middle coupling agent is no more than the 1% of mixed material weight.
8. the method according to claim 1 for suppressing compound block using semicoke and quick lime, which is characterized in that step 4
In, the additive amount of binder is account for powder gross mass 1%~20%.
9. the method according to claim 1 for suppressing compound block using semicoke and quick lime, which is characterized in that step 5
The line pressure of middle molding machine two pairs of rollers is 5t/cm-15t/cm.
10. the method according to claim 1 for suppressing compound block using semicoke and quick lime, which is characterized in that step 6
In, clinker is converted by raw material using closed roasting to raw material；Or directly by raw material in furnace of calcium carbide top filler and tremie pipe
Middle realization drying and dehydrating, is then converted into clinker in furnace of calcium carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587515.4A CN108706586B (en) | 2018-06-08 | 2018-06-08 | Method for pressing composite block material by adopting semicoke and quicklime |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587515.4A CN108706586B (en) | 2018-06-08 | 2018-06-08 | Method for pressing composite block material by adopting semicoke and quicklime |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108706586A true CN108706586A (en) | 2018-10-26 |
| CN108706586B CN108706586B (en) | 2022-04-26 |
Family
ID=63871856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810587515.4A Active CN108706586B (en) | 2018-06-08 | 2018-06-08 | Method for pressing composite block material by adopting semicoke and quicklime |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108706586B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020087633A1 (en) * | 2018-10-29 | 2020-05-07 | 北京科技大学 | Method for generating calcium carbide using electrothermal method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106010707A (en) * | 2016-07-21 | 2016-10-12 | 北京神雾环境能源科技集团股份有限公司 | Forming method of semicoke powder and quicklime powder |
| CN106867612A (en) * | 2017-02-09 | 2017-06-20 | 鄂尔多斯市瀚博科技有限公司 | A kind of formed coke and preparation method and application with semi-coke end as primary raw material |
| 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 |
| CN106946257A (en) * | 2017-03-13 | 2017-07-14 | 神雾环保技术股份有限公司 | Semi-coke powder prepares calcium carbide compound binding agent and the method for preparing calcium carbide |
| CN107010626A (en) * | 2017-04-11 | 2017-08-04 | 北京柯林斯达科技发展有限公司 | A kind of method that carbonaceous raw material prepares pelletizing method carbide raw material with quick lime mixed-forming |
| CN107189796A (en) * | 2017-05-25 | 2017-09-22 | 神雾环保技术股份有限公司 | The forming method of calcium carbide production raw material |
-
2018
- 2018-06-08 CN CN201810587515.4A patent/CN108706586B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106010707A (en) * | 2016-07-21 | 2016-10-12 | 北京神雾环境能源科技集团股份有限公司 | Forming method of semicoke powder and quicklime powder |
| CN106867612A (en) * | 2017-02-09 | 2017-06-20 | 鄂尔多斯市瀚博科技有限公司 | A kind of formed coke and preparation method and application with semi-coke end as primary raw material |
| CN106946257A (en) * | 2017-03-13 | 2017-07-14 | 神雾环保技术股份有限公司 | Semi-coke powder prepares calcium carbide compound binding agent and the method for preparing calcium carbide |
| 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 |
| CN107010626A (en) * | 2017-04-11 | 2017-08-04 | 北京柯林斯达科技发展有限公司 | A kind of method that carbonaceous raw material prepares pelletizing method carbide raw material with quick lime mixed-forming |
| CN107189796A (en) * | 2017-05-25 | 2017-09-22 | 神雾环保技术股份有限公司 | The forming method of calcium carbide production raw material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020087633A1 (en) * | 2018-10-29 | 2020-05-07 | 北京科技大学 | Method for generating calcium carbide using electrothermal method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108706586B (en) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101497835B (en) | Method for making coal fine into form coke by microwave energy | |
| CN106591575B (en) | Low energy consumption coal-pressing ball and preparation method thereof | |
| CN100551857C (en) | Utilize iron ore tailings to prepare the method for porose glass composite material | |
| CN104194813B (en) | A kind of preparation method of coke | |
| CN105668568B (en) | Produce the system and method for calcium carbide | |
| CN101525689B (en) | Method for preparing carbonaceous autoreduction cold pressing block and application thereof | |
| CN103290227A (en) | Preparation method of nickel-chromium cast iron with stainless steel dedusting ash as raw material | |
| CN107353919A (en) | Production process for partially pure oxygen oxidation coke | |
| CN104372170B (en) | Method and system for manufacturing cooled slag-making pellets from steel plant dedusting ash or steel plant sludge | |
| CN101691621B (en) | Method of producing sponge iron from carbon dedusting ash and iron scales | |
| CN102776047B (en) | Method for molding calcium-base industrial powder | |
| CN113736940A (en) | Method for treating copper slag by rotary hearth furnace | |
| CN204434292U (en) | Prepare the system of calcium carbide | |
| CN104445114A (en) | Method for preparing yellow phosphorus | |
| CN104556037A (en) | Method for preparing calcium carbide | |
| CN108706586A (en) | A method of compound block is suppressed using semicoke and quick lime | |
| CN103087795A (en) | Preparation method of formed semicoke for calcium carbide | |
| CN112591723A (en) | Method for producing powdered rock phosphate pellets by using low-grade powdered rock phosphate | |
| CN110819793B (en) | Thick material layer sintering production method | |
| CN107142120A (en) | High-reactivity coke and preparation method thereof | |
| CN101619386B (en) | Iron coke for blast furnaces, preparation method and application thereof | |
| CN105463146A (en) | Method for carrying out direct reduction processing on hematite through rotary hearth furnace to produce granular iron | |
| CN111118238B (en) | Method for preparing steelmaking furnace burden by using blast furnace gas ash zinc extraction kiln slag | |
| CN210795784U (en) | System for production carbide | |
| CN204434293U (en) | Prepare the system of calcium carbide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |