CN1107439A - Coke powder series refined carbon powder an its producing process - Google Patents
Coke powder series refined carbon powder an its producing process Download PDFInfo
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- CN1107439A CN1107439A CN 94118298 CN94118298A CN1107439A CN 1107439 A CN1107439 A CN 1107439A CN 94118298 CN94118298 CN 94118298 CN 94118298 A CN94118298 A CN 94118298A CN 1107439 A CN1107439 A CN 1107439A
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Abstract
A combined re-separation-floating process is used to prepare refined carbon powder from peacoke as raw material through simple technological route. Obtained refined carbon powder features high carbon content (90-98%) and low ash and sulfur content, and may be used as high-quality sprayed powder for blast furnace, filler and carbonizing agent, as well as raw material for producing quality carbon and graphite products.
Description
The invention belongs to the mineral products finishing technology.
The development of ferrous metallurgy industry has correspondingly promoted the development of coking industry.According to statistics, the annual production of various coke such as the present metallurgical mechanical coke of China, chemical industry gas making Jiao, foundry coke, native Jiao has reached about 100,000,000 tons, and the breeze about 20% is wherein arranged approximately.Because its granularity thin (granularity is generally less than 6mm, sometimes even be lower than 3mm).Ash content is higher, is difficult to be widely used in metallurgy and chemical industry, thereby has caused a large amount of overstocking.Calculate that through preliminary only the Shen Fu mining area of Shanxi Province and northern Shensi just has millions of little mechanical cokes of ton and native breeze to store up, and has not only taken large stretch of arable land, has polluted environment, and has caused the serious wasting of resources.
In order to turn waste into wealth, improve the utilization ratio of resource, for these breezes are found out economical rationality, effective good outlet of utilizing, through research, the present invention selects the breeze in China representative mining area of part to carry out selected test, by gravity treatment-flotation combined sorting process, obtained the series refined carbon powder of carbon content at the different size more than 90～98%.Test shows that this series refined carbon powder dusts as the fine blast furnace, can obviously improve the transformation efficiency and the iron quality of iron-smelting furnace; As the high-quality carburelant, can obviously reduce the consumption of pitch carburelant, reduce steel-making cost.In addition, this series refined carbon powder is because carbon content height, ash content are low, also can be used as the raw material of production high-quality charcoal element and graphite material and as carbon filler.
According to the retrieval, only just produce moulded coal or formed coke both at home and abroad at present, still do not carry out the research and development that breeze prepares series refined carbon powder with breeze.Characteristics of the present invention are the characteristics in conjunction with existing China breeze, take following fairly simple production technique to produce series refined carbon powder.
(1) selecting materials is the key of producing the high-quality refined carbon powder, should choose that pilling up time is short, the wind degree of oxidation is lower, moisture and the lower fresh breeze of external foreign material content, wherein moisture generally should not surpass 40～60%, and external foreign material generally should not surpass 20～40%.
(2) pre-treatment master state is that, moisture long to the time of storing up and the higher breeze of external foreign material content carry out pre-treatment, and pre-treatment comprises dry and foreign material removal two procedures.
1. removing foreign material (impurity elimination) when having sneaked into mud, sand and other foreign material in the breeze, should handle removal, mainly is to remove wherein mud, sand etc. by washing, removes wherein metallic impurity by tramp iron separator.
2. dry washing is removed foreign material or was stored up when the time, long breeze moisture content was higher, at first should carry out drying treatment.Because seasoning is consuming time long and need big place, normally dries.
(3) classification utilizes multi-usage coal screening devices such as vibratory screening apparatus, probability screen to carry out the size classification of breeze, generally be with breeze be divided into 6～0.5mm breeze and-burnt mud two portions of 0.5mm.
(4) selected the present invention adopts gravity treatment-joint flotation technology to carry out the selected of breeze and burnt mud.
1. be that the breeze of 6～0.5mm adopts centrifugal table for granularity or heavily be situated between and medium swirler not carries out sorting that the rate of recovery is 50～90%.When adopting the dense-medium cyclone sorting, the sorting condition is: separating density is 1200～2500kg/m
3
2. for granularity be-burnt mud below the 0.5mm adopts method for floating, the method that can adopt table floation to combine in case of necessity.Wherein flotation conditions is: pore forming material is the alcohols pore forming material, and consumption is 0.1～0.5kg/t; Collecting agent is industrial oils, and consumption is 1～6kg/t; Promotor is ionogenic surfactant, and consumption is 0.15～0.5kg/t; Aeration quantity is 0.50～2.0m
3/ m
2Min; Stirring velocity 300～1800r/min.
3. when the ash content of breeze and sulphur content content were higher, the burnt mud of-0.25mm can be no longer selected, and directly as dryer fuel.Breeze for 6～0.25mm can adopt shaking table-flotation to combine, or the flow process that (water Jie) swirler-flotation that heavily is situated between combines is carried out selected.Can consider to take substep to unite cleaning technological flowasheet in case of necessity.
(5) the selected breeze of dehydration 6～0.5mm adopts the centrifuge dehydration, and the moisture that requires the smart breeze in dehydration back is below 6～10%; The burnt mud of-0.5mm adopts the dehydration of traditional vacuum filtering type water extracter, and the moisture of the smart burnt mud in dehydration back should be below 20～28%.
(6) the dry cylindrical drier that adopts carries out drying, and the moisture that requires dry back refined carbon powder is below 2%.
(7) check adopts the coal laboratory national standard to carry out the technical analysis and the ultimate analysis of refined carbon powder, mainly analyzes its moisture, ash content, volatile matter, fixed carbon, sulphur, phosphorus content, and carries out necessary ash component analysis.
(8) packing is packed the refined carbon powder that is up to the standards by specification.
The refined carbon powder that utilizes the present invention to produce can be made the series product of different grain size and different mass specification as requested, thereby can satisfy requirements of different users.
By analysis, it is fairly obvious that breeze prepares the benefit of refined carbon powder, and building a breeze concentrate upgrading plant investment of producing 200000 tons per year is 1,500 ten thousand yuan, and selected one ton of breeze can breed 100～1000 yuan/more than the t, such 1 year is recoverable fully invested, and economic benefit is fairly obvious.And utilized discarded breeze in large quantities, and greatly improved resource utilization, alleviated environmental pollution, have good social benefit and environmental benefit.
Embodiment
1 couple of embodiment is selected from the high grey mechanical coke end in somewhere, Shanxi and has carried out selected test, this breeze granularity is less than 6mm, and after pre-treatment and classification, the rate of recovery is 98%, respectively to 6～0.5mm breeze and-the burnt mud of 0.5mm carried out heavily being situated between swirler and flotation sorting test, the results are shown in Table 1.
The native breeze that 2 couples of embodiment are selected from ore deposit, Shen Fu mining area has carried out selected test, this breeze granularity is less than 6mm, and through pre-treatment and classification, the rate of recovery is 97.4%, respectively to 6～0.5mm breeze and-the burnt mud of 0.5mm has carried out shaking table and flotation is selected from test, the results are shown in Table 2.
3 couples of embodiment are selected from the little mechanical coke of the high-sulfur end in southwestern somewhere and have carried out selected test, the granularity of this breeze is less than 6mm, through pre-treatment and classification, the rate of recovery is 98.4%, respectively to the breeze of 6～0.5mm and-burnt mud below the 0.5mm carried out hydrocyclone and hydrocyclone-flotation combined sorting test, the results are shown in Table 3.
4 couples of embodiment are selected from the high grey high-sulfur mechanical coke end of southwestern somewhere-6mm, directly slough-the burnt mud of 0.25mm, adopt centrifugal table-hydrocyclone-flotation combined flow process to carry out sorting test, the results are shown in Table 4 then.
Claims (6)
1, series refined carbon powder and production technique is characterized in that carbon content height, the ash content of this refined carbon powder is low, sulphur content is low, can make the series product of different grain size and different mass specification by customer requirements.
2, series refined carbon powder according to claim 1 is that raw material is produced by following production technique with the breeze:
(1) selects materials
(2) pre-treatment
(3) classification
(4) selected
(5) dehydration
(6) drying
(7) check
(8) packing
3, production technique according to claim 2, its classification are to adopt multi-usage coal screening devices such as vibratory screening apparatus, probability screen to carry out the size classification of breeze, generally be with breeze be divided into 6～0.5mm breeze and-burnt mud two portions of 0.5mm.
4, production technique according to claim 2, its refining process are to adopt gravity treatment-joint flotation technology to carry out the selected of breeze and burnt mud.
(1) be that the breeze of 6～0.5mm adopts centrifugal table or dense-medium cyclone to carry out sorting with hydrocyclone for granularity, the rate of recovery is generally 50～90%, and when the sorting of employing dense-medium cyclone, the sorting condition is: separating density is 1200～2500kg/m
3
(2) for granularity be-the burnt mud of 0.5mm adopts method for floating, the method that can adopt shaking table-flotation to combine is selected in case of necessity.Wherein flotation conditions is that pore forming material is the alcohols pore forming material, and consumption is 0.1～0.5kg/t; Collecting agent is industrial oils, and consumption is 1～6kg/t; Promotor is mainly ionogenic surfactant, and consumption is 0.15～0.5kg/t; Air capacity is 0.50～2.0m
3/ m
2Min; Stirring velocity 300～1800r/min.
(3) when the ash content of breeze and sulphur content content were higher, the burnt mud of-0.25mm can be no longer selected, and directly as the fuel of dryer.And can adopt shaking table-flotation to combine for the breeze of 6～0.25mm, or the flow process that combines of (water Jies) matter swirler-flotation that heavily is situated between carries out selectedly, can consider in case of necessity to adopt and unite cleaning technological flowasheet step by step.
5, production technique according to claim 2, its dewatering process is that the selected breeze of 6～0.5mm adopts the centrifuge dehydration, require the moisture of the smart breeze in dehydration back to drop to below 6～10%, the burnt mud of-0.5mm adopts the dehydration of centrifuging formula water extracter, and the moisture of the smart burnt mud after the dehydration should be below 20～28%.
6, production technique according to claim 2, its drying process are to adopt cylindrical drier to carry out drying, require the moisture of dry back refined carbon powder to drop to below 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118298 CN1107439A (en) | 1994-11-21 | 1994-11-21 | Coke powder series refined carbon powder an its producing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118298 CN1107439A (en) | 1994-11-21 | 1994-11-21 | Coke powder series refined carbon powder an its producing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1107439A true CN1107439A (en) | 1995-08-30 |
Family
ID=5038751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94118298 Pending CN1107439A (en) | 1994-11-21 | 1994-11-21 | Coke powder series refined carbon powder an its producing process |
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| CN (1) | CN1107439A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102533300A (en) * | 2011-12-31 | 2012-07-04 | 山西沁新能源集团股份有限公司 | Clean-type coke byproduct high-ash coke powder industrial purifying device for heat recovery coke furnace |
| CN105154621A (en) * | 2014-06-03 | 2015-12-16 | 本钢板材股份有限公司 | Preparation method of carburant for steel-making |
| CN106556242A (en) * | 2015-09-25 | 2017-04-05 | 常州高克锈机械有限公司 | A kind of carbon dust dehydrator |
| CN112608777A (en) * | 2020-10-27 | 2021-04-06 | 安徽钢研新材料科技有限公司 | Waste coke powder bonded recycled fuel and preparation method thereof |
| CN112661151A (en) * | 2021-02-22 | 2021-04-16 | 华北理工大学 | Method for extracting graphite carbon from steel carbon-containing dust |
| CN113594450A (en) * | 2021-07-15 | 2021-11-02 | 山西沁新能源集团股份有限公司 | Preparation method of coal-based artificial graphite cathode material for lithium ion battery |
-
1994
- 1994-11-21 CN CN 94118298 patent/CN1107439A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102533300A (en) * | 2011-12-31 | 2012-07-04 | 山西沁新能源集团股份有限公司 | Clean-type coke byproduct high-ash coke powder industrial purifying device for heat recovery coke furnace |
| CN105154621A (en) * | 2014-06-03 | 2015-12-16 | 本钢板材股份有限公司 | Preparation method of carburant for steel-making |
| CN106556242A (en) * | 2015-09-25 | 2017-04-05 | 常州高克锈机械有限公司 | A kind of carbon dust dehydrator |
| CN112608777A (en) * | 2020-10-27 | 2021-04-06 | 安徽钢研新材料科技有限公司 | Waste coke powder bonded recycled fuel and preparation method thereof |
| CN112661151A (en) * | 2021-02-22 | 2021-04-16 | 华北理工大学 | Method for extracting graphite carbon from steel carbon-containing dust |
| CN113594450A (en) * | 2021-07-15 | 2021-11-02 | 山西沁新能源集团股份有限公司 | Preparation method of coal-based artificial graphite cathode material for lithium ion battery |
| CN113594450B (en) * | 2021-07-15 | 2023-01-13 | 山西沁新能源集团股份有限公司 | Preparation method of coal-based artificial graphite cathode material for lithium ion battery |
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