CN105905904B - Compound binding agent and utilize compound binding agent carry out the molding method of carbide raw material - Google Patents
Compound binding agent and utilize compound binding agent carry out the molding method of carbide raw material Download PDFInfo
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Abstract
The molding method of carbide raw material is carried out the present invention relates to a kind of compound binding agent and using compound binding agent.Compound binding agent includes A, B component, wherein the component A is made a living substance fiber, and the B component is selected from one or both of tar slag, pitch, and the weight ratio of the component A and the B component is 1：(0.3‑10).The molding method of carbide raw material is carried out using above-mentioned compound binding agent, is included the following steps：Calcium lime powder, the compound binding agent and coal dust are uniformly mixed, mixed material is obtained；The mixed material is carried out to heat treatment and compression moulding successively, obtains carbide raw material pelletizing；Wherein, when mixing the compound binding agent addition be the calcium lime powder and the coal dust total amount 5 30wt%.The present invention carries out the molding technique of carbide raw material using above-mentioned compound binding agent, and cost of material is low and beneficial to environmental protection, and the shock resistance of the carbide raw material pelletizing of generation is good, and process is simple, improves the comprehensive benefit of calcium carbide production.
Description
Technical field
The invention mainly relates to the production field of carbide raw material more particularly to a kind of compound binding agent and utilize compoiste adhering
Agent carries out the molding method of carbide raw material.
Background technology
Since the increasingly in short supply and price of petroleum resources is soaring, oil ethylene chemical industry is faced with cost pressure, thus acetylene
Chemical industry will be again full of vitality, and calcium carbide produces acetylene, therefore calcium carbide industry is faced with huge opportunity to develop.Another party
Face, with popularizing for mechanical coal mining technology, lump coal rate reduces, and fine coal rate is but up to 80% or more, and causing lump coal, supply falls short of demand,
Fine coal is largely overstock, this not only causes the waste of fine coal resource and the environmental pollution in mining area, while also restrict the normal of mining area
Production development affects the Social benefit and economic benefit of coal mine.For the Energy Situation of China's " rich coal, oil-poor, few gas ", open
Hair powder coal prepares calcium carbide technique and arrives acetylene chemical industry again, and there is important comprehensive development and utilization to be worth.
The production of traditional calcium carbide industry mainly with blocky lime (8~40mm) or blocky coke (5~25mm) be raw material into
Row production, since raw material will produce a certain amount of powder (about 15~20%) in the links such as conveying, broken, screening, and should
Powder cannot be used for calcium carbide production, so that a large amount of pulverized limestone, coke blacking, coal dust resource are wasted, cause huge
The wasting of resources and serious environmental pollution, increase control expense and cost.In addition, there is also reaction rates for traditional calcium carbide industry
Slowly, the reaction time is long and the problems such as reaction temperature is high, leads to that power consumption is big, low output.
The raw material for producing calcium carbide can be microfine coal and ultra-fine calcium lime powder.Due to can be carried significantly using superfine powder
The reactivity of high material significantly reduces reaction temperature and energy consumption, and then reduces the production cost of calcium carbide.The molding skill of superfine powder
Art is widely used, but the technology using microfine coal and calcium lime powder as the production calcium carbide of raw material is but never broken through,
The molding of middle microfine coal and calcium lime powder is always a problem.
Simultaneously in the production process of calcium carbide, dust is inevitably resulted from.A large amount of dust floats in air, meeting
Environment is polluted, jeopardizes health, causes the waste of carbide raw material, increase production cost, while can also increase production process
In insecurity.
Therefore, in view of the above-mentioned problems, it is necessary to provide one kind being used for the molding compound binding agent of carbide raw material and its use
Method to solve the formation problems of microfine coal and calcium lime powder, while can make full use of powdery coal resources, to protect again
Environment improves the comprehensive benefit of calcium carbide production.
Invention content
In view of the above-mentioned problems, the present invention is intended to provide a kind of compound binding agent and utilize compound binding agent carry out carbide raw material
Molding method can preferably solve the formation problems of microfine coal and calcium lime powder and make full use of powdery coal resources.
The present invention is intended to provide it is a kind of for the molding compound binding agent of carbide raw material, including：A, B component, wherein described
Component A is made a living substance fiber, and the B component is selected from one or both of tar slag, pitch, the component A and the B groups
The weight ratio divided is 1：(0.3-10).
Biomass fiber in the compound binding agent may include rice straw, wheat stalk, maize straw, sugarcane straw
Any one of stalk, sawdust or arbitrary several mixture；The length of the biomass fiber is less than 6mm.
Further, the component A in the compound binding agent can be wheat stalk, and the B component can be tar slag,
The weight ratio of the component A and the B component is 1：(1-10).
Further, the component A in the compound binding agent can be the mixture of rice straw and wheat stalk, institute
The mixture that B component can be tar slag and pitch is stated, the weight ratio of the rice straw and the wheat stalk is 1：
The weight ratio of (0.1-10), the tar slag and the pitch is 1：(0.1-10), the component A and the B component
Weight ratio is 1：(0.5-10).
Further, the component A in the compound binding agent can be maize straw, and the B component can be tar slag
With the mixture of pitch, the weight ratio of the tar slag and pitch is 1：(0.1-10), the component A and the B component
Weight ratio be 1：(1-10).
Further, the component A in the compound binding agent can be sawdust, and the B component can be tar slag and drip
The weight ratio of green mixture, the tar slag and pitch is 1：(0.1-10), the weight of the component A and the B component
It is 1 to measure part ratio：(1-10).
Further, the component A in the compound binding agent can be rice straw, and the B component can be pitch, institute
The weight ratio for stating component A and the B component is 1：(0.3-10).
The molding method of carbide raw material being carried out using above-mentioned compound binding agent the present invention also provides a kind of, the method includes
Following steps：
Calcium lime powder, the compound binding agent and coal dust are uniformly mixed, mixed material is obtained；
By compacting after the mixed material is heated, it is shaped to carbide raw material pelletizing；
Wherein, the weight ratio of component A and B component is 1 in the compound binding agent when mixing：(0.3-10), it is described
The addition of compound binding agent is the 5-30wt% of the calcium lime powder and the coal dust gross mass.
Further, the water content of the coal dust is 4wt% or less；The grain size of the calcium lime powder is less than 60 mesh, wherein
CaO content >=85wt%；In the coal dust, grade is the 90wt% or more that 80 mesh coal dust below accounts for the coal dust total amount.
Further, the temperature of the heat treatment is 90-120 DEG C, time 60-120min.
Above-mentioned technical proposal according to the present invention had not only solved the formation problems of microfine coal and calcium lime powder, but also
Powdery coal resources and biomass resource are taken full advantage of, to the work for playing environmental protection, improving calcium carbide production comprehensive benefit
With.
Description of the drawings
Fig. 1 be the embodiment of the present invention utilize compound binding agent carry out the molding flow chart of carbide raw material.
Specific implementation mode
Below in conjunction with drawings and examples, the specific implementation mode of the present invention is described in more details, so as to energy
The advantages of enough more fully understanding the solution of the present invention and various aspects.However, specific embodiments described below and implementation
Example is for illustrative purposes only, rather than limiting the invention.
The present invention is mainly to provide one kind and being used for the molding compound binding agent of carbide raw material, while providing compound viscous using this
It ties agent and carries out the molding method of carbide raw material.
The compound binding agent of technical solution of the present invention is grouped as by two kinds of groups of following A, B：Component A is made a living substance fiber,
B component is the mixture that any one of tar slag and pitch or both are formed with arbitrary proportion.The component A and the B groups
The weight ratio divided is 1：(0.3-10).
The length of wherein biomass fiber is preferably less than 6mm, is convenient for the mixing of material and subsequent molding in this way.
After biomass fiber being Tumblied Dry, the staple fiber that length is less than 6mm is ground into pulverizer.
In order to choose the easy raw material of of low cost and access approaches, in conjunction with China's national situation, biomass fiber is contemplated that
What is derived from a wealth of sources makees species or forest class, for example biomass fiber component A can be rice straw, wheat stalk, corn stalk
Stalk, sugarcane stalk or sawdust any one of or they more than one mixture for being formed with arbitrary proportion, so just
It can turn waste into wealth, rationally utilize resource.
The ratio difference of component A and B component can cause to be formed by carbide raw material performance difference, carbide raw material performance
The average fall strength of briquette etc. of leading indicator such as finished product carbide raw material pelletizing.The difference of each component ratio and the carbide raw material of generation
Energy difference will indicate that see below specific embodiment by way of examples.
One such preferred embodiment is that the component A in the compound binding agent is wheat stalk, the B component
For tar slag, the weight ratio of the component A and the B component is 1：(1-10).
Another preferred embodiment is, the component A in the compound binding agent is the mixed of rice straw and wheat stalk
Object is closed, the B component is the mixture of tar slag and pitch, and the weight ratio of the rice straw and the wheat stalk is
1：The weight ratio of (0.1-10), the tar slag and the pitch is 1：(0.1-10), the component A and the B component
Weight ratio be 1：(0.5-10).
Another preferred embodiment is that the component A in the compound binding agent is maize straw, and the B component is coke
The weight ratio of the mixture of the dregs of fat and pitch, the tar slag and pitch is 1：(0.1-10), the component A and the B
The weight ratio of component is 1：(1-10).
Preferred another program is alternatively, and the component A in the compound binding agent is sawdust, and the B component is coke
The weight ratio of the mixture of the dregs of fat and pitch, the tar slag and pitch is 1：(0.1-10), the component A and the B
The weight ratio of component is 1：(1-10).
There is provided a kind of preferred embodiment again is, the component A in the compound binding agent is rice straw, the B component
For pitch, the weight ratio of the component A and the B component is 1：(0.3-10).
Other preferred embodiment present invention will be described in detail with said program one by one in embodiment, no longer enumerated here.
Invention additionally discloses a kind of compound binding agents using in above-mentioned technical proposal to carry out the molding method of carbide raw material,
Its main flow is：Coal dust, quick lime and compound binding agent mixing, then heated feeding former are shaped to carbide raw material
Pelletizing.
Certainly, feed coal used when specific production, quick lime may be blocky, it is also possible to because water content is higher, need
Coal or quick lime first worn into powdery, so that their granularity is attenuated in powdery, then mixed with binder, this is with regard to more bakings
Dry, levigate technique.The complete flow is as shown in Figure 1.
Specifically, when carrying out carbide raw material molding using above-mentioned compound binding agent comprising step：By calcium lime powder,
Compound binding agent, coal dust are uniformly mixed, and obtain mixed material；By compression moulding after mixed material is heated again, calcium carbide is obtained
Raw material pelletizing.
Wherein, the addition of the compound binding agent is the 5-30wt% of the calcium lime powder and the coal dust total amount.
Coal dust used in carbide raw material, can also be screenings or coke powder, coal dust after crushing in calcium carbide production,
Ensure that wherein grade is 80 mesh and coal dust content below in 90wt% or more, and ensures its water content in 4wt% or less；It is used
The calcium lime powder arrived is that grain size is less than the thin calcium lime powder of 60 purposes, wherein CaO content >=85%.Wt% referred to herein is referred both to
Weight percent.
In mixed material, all kinds of mixing equipments in this field can be used as mixer, material is put into wherein and is continued
Mix 3~8min so that material is uniformly mixed.
, can be using air dry oven or other heating equipments as heater when heating mixed material, when heating, will
Mixed material is put into 60~120min of continuous heating wherein and at 90~120 DEG C.
In compression moulding, two pairs of rollers ball press, tablet press machine or other formers may be used as former, will mix
Material, which is put into, is wherein pressed into required lumpiness, and so far, carbide raw material is just formed for pelletizing.
The technical solution of embodiment of the present invention, process is simple, used binder have derive from a wealth of sources, valence
The advantages that lattice are cheap, additive amount is few, and biomass fiber restrained effectively the generation and development of pelletizing internal tiny crack,
The shock resistance for improving pelletizing reduces the pulverization rate of pelletizing, disclosure satisfy that the requirement of calcium carbide production technology.In addition, this
Technical solution can make full use of powdery coal resources and biomass resource, can be with environmental protection, to improve calcium carbide production
Comprehensive benefit.
The skill of carbide raw material forming method is carried out to illustrate the present invention using compound binding agent with reference to specific embodiment
Art scheme.
Institute's taking technique condition value is illustrative in following embodiments, be can use in numberical range book as indicated above
It is shown.
Herein, term " wt% " refers to weight %.
Embodiment 1
Carbide raw material is produced using the compound binding agent in the above embodiment, each substance (unit is weighed by following amount：Gram
(g))：
Compound binding agent：Component A：Rice straw (grain size<6mm)42g；B component：Pitch 63g；
Coal dust：1000g；
Calcium lime powder：1100g；
Calcium lime powder, compound binding agent, coal dust are added in batch mixer, 3min is mixed；By mixed material at 110 DEG C
Molding machine pelletizing (block) is used after heating 75min, the average fall strength of briquette of finished product carbide raw material pelletizing is 21.5 times/after testing.
Embodiment 2
Carbide raw material is produced using the compound binding agent in the above embodiment, each substance (unit is weighed by following amount：Gram
(g))：
Compound binding agent：Component A：Wheat stalk (grain size<6mm)63g；B component：Tar slag 168g；
Coal dust：1000g；
Calcium lime powder：1100g；
Calcium lime powder, compound binding agent, coal dust are added in batch mixer, 5min is mixed；By mixed material at 90 DEG C
Molding machine pelletizing (block) is used after heating 120min, the average fall strength of briquette of finished product carbide raw material pelletizing is 28.0 times/after testing.
Embodiment 3
Carbide raw material is produced using the compound binding agent in the above embodiment, each substance (unit is weighed by following amount：Gram
(g))：
Compound binding agent：Component A：Maize straw (grain size<6mm)84g；B component：Tar slag 110g, pitch 100g；
Coal dust：1000g；
Calcium lime powder：1100g；
Calcium lime powder, compound binding agent, coal dust are added in batch mixer, 5min is mixed；By mixed material at 95 DEG C
Molding machine pelletizing (block) is used after heating 120min, the average fall strength of briquette of finished product carbide raw material pelletizing is 17.8 times/after testing.
Embodiment 4
Carbide raw material is produced using the compound binding agent in the above embodiment, each substance (unit is weighed by following amount：Gram
(g))：
Compound binding agent：Component A：Sugarcane stalk (grain size<6mm)126g；B component：Tar slag 200g, pitch 52g；
Coal dust：1000g；
Calcium lime powder：1100g；
Calcium lime powder, compound binding agent, coal dust are added in batch mixer, 6min is mixed；By mixed material at 105 DEG C
Molding machine pelletizing (block) is used after heating 90min, the average fall strength of briquette of finished product carbide raw material pelletizing is 16.5 times/after testing.
Embodiment 5
Carbide raw material is produced using the compound binding agent in the above embodiment, each substance (unit is weighed by following amount：Gram
(g))：
Compound binding agent：Component A：Sawdust (grain size<4mm)168g；B component：Tar slag 115g, pitch 200g；
Coal dust：1000g；
Calcium lime powder：1100g；
Calcium lime powder, compound binding agent, coal dust are added in batch mixer, 8min is mixed；By mixed material at 95 DEG C
Molding machine pelletizing (block) is used after heating 120min, the average fall strength of briquette of finished product carbide raw material pelletizing is 20.2 times/after testing.
Embodiment 6
Carbide raw material is produced using the compound binding agent in the above embodiment, each substance (unit is weighed by following amount：Gram
(g))：
Compound binding agent：Component A：Rice straw (grain size<6mm) 105g, wheat stalk (grain size<6mm)105g；B component：
Tar slag 105g, pitch 315g；
Coal dust：1000g；
Calcium lime powder：1100g；
Calcium lime powder, compound binding agent, coal dust are added in batch mixer, 8min is mixed；By mixed material at 120 DEG C
Molding machine pelletizing (block) is used after heating 60min, the average fall strength of briquette of finished pellet is 25.6 times/.
By above example as it can be seen that technical scheme of the present invention process is simple, used compound binding agent has
It derives from a wealth of sources, is cheap, the advantages that additive amount is few；Biomass fiber restrained effectively the generation of pelletizing internal tiny crack
And development, the shock resistance of pelletizing is improved, the pulverization rate of pelletizing is reduced.
Finally it should be noted that：Obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously
The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description
Go out other various forms of variations or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn
The obvious changes or variations that Shen goes out are still in the protection scope of this invention.
Claims (9)
1. a kind of compound binding agent, the compound binding agent includes A, B component, wherein the component A is made a living substance fiber,
The B component is selected from tar slag, one or both of pitch, and the weight ratio of the component A and the B component is 1：
(0.3-10)；The biomass fiber is selected from rice straw, wheat stalk, maize straw, sugarcane stalk and sawdust；The life
The length of substance fiber is less than 6mm.
2. compound binding agent according to claim 1, which is characterized in that the component A is wheat stalk, the B component
For tar slag, the weight ratio of the component A and the B component is 1：(1-10).
3. compound binding agent according to claim 1, which is characterized in that the component A is rice straw and wheat stalk
Mixture, the B component be tar slag and pitch mixture, the weight part ratio of the rice straw and the wheat stalk
Example is 1：The weight ratio of (0.1-10), the tar slag and the pitch is 1：(0.1-10), the component A and the B
The weight ratio of component is 1：(0.5-10).
4. compound binding agent according to claim 1, which is characterized in that the component A is maize straw, the B component
For the mixture of tar slag and pitch, the weight ratio of the tar slag and pitch is 1：(0.1-10), the component A and institute
The weight ratio for stating B component is 1：(1-10).
5. compound binding agent according to claim 1, which is characterized in that the component A is sawdust, and the B component is coke
The weight ratio of the mixture of the dregs of fat and pitch, the tar slag and pitch is 1：(0.1-10), the component A and the B
The weight ratio of component is 1：(1-10).
6. compound binding agent according to claim 1, which is characterized in that the component A is rice straw, the B component
For pitch, the weight ratio of the component A and the B component is 1：(0.3-10).
7. a kind of carrying out the molding method of carbide raw material, the side using claim 1 to 6 any one of them compound binding agent
Method includes the following steps：
Calcium lime powder, the compound binding agent and coal dust are uniformly mixed, mixed material is obtained；
The mixed material is carried out to heat treatment and compression moulding successively, obtains carbide raw material pelletizing；
Wherein, when mixing the compound binding agent addition be the calcium lime powder and the coal dust total amount 5-30wt%.
8. the method according to the description of claim 7 is characterized in that
The water content of the coal dust is 4wt% or less；
The grain size of the calcium lime powder is less than 60 mesh, wherein CaO content >=85wt%；
In the coal dust, grade is the 90wt% or more that 80 mesh coal dust below accounts for the coal dust total amount.
9. the method according to the description of claim 7 is characterized in that the temperature of the heat treatment is 90-120 DEG C, the time is
60-120min。
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106430201A (en) * | 2016-12-02 | 2017-02-22 | 神雾环保技术股份有限公司 | Method for preparing calcium carbide |
| CN107010626B (en) * | 2017-04-11 | 2020-11-03 | 北京柯林斯达科技发展有限公司 | Method for preparing pelletizing calcium carbide raw material by mixing and molding carbonaceous raw material and quick lime |
| CN107572528A (en) * | 2017-08-16 | 2018-01-12 | 神雾环保技术股份有限公司 | The method for preparing production calcium carbide pelletizing |
| CN109970063A (en) * | 2019-03-28 | 2019-07-05 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of method producing calcium carbide and feed proportioning system |
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| CN102225765A (en) * | 2011-05-10 | 2011-10-26 | 云南邦特新材料有限公司 | Mixed pellets composed of fine coal powder and limestone powder for producing calcium carbide |
| CN103708457A (en) * | 2013-12-25 | 2014-04-09 | 北京神雾环境能源科技集团股份有限公司 | Method for preparing calcium carbide |
| CN104480302A (en) * | 2014-11-26 | 2015-04-01 | 北京神雾环境能源科技集团股份有限公司 | Agglomerating method of pellets containing superfine pulverized coal and superfine quicklime powder |
| CN104828824A (en) * | 2015-03-24 | 2015-08-12 | 中国科学院过程工程研究所 | A method of preparing calcium carbide by co-molding of carbide slag and coke powder |
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- 2016-04-19 CN CN201610245142.3A patent/CN105905904B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225765A (en) * | 2011-05-10 | 2011-10-26 | 云南邦特新材料有限公司 | Mixed pellets composed of fine coal powder and limestone powder for producing calcium carbide |
| CN103708457A (en) * | 2013-12-25 | 2014-04-09 | 北京神雾环境能源科技集团股份有限公司 | Method for preparing calcium carbide |
| CN104480302A (en) * | 2014-11-26 | 2015-04-01 | 北京神雾环境能源科技集团股份有限公司 | Agglomerating method of pellets containing superfine pulverized coal and superfine quicklime powder |
| CN104828824A (en) * | 2015-03-24 | 2015-08-12 | 中国科学院过程工程研究所 | A method of preparing calcium carbide by co-molding of carbide slag and coke powder |
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