CN104016318A - Combined carbon reducing agent for yellow phosphorus production and preparation method of combined carbon reducing agent - Google Patents
Combined carbon reducing agent for yellow phosphorus production and preparation method of combined carbon reducing agent Download PDFInfo
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- CN104016318A CN104016318A CN201410274373.8A CN201410274373A CN104016318A CN 104016318 A CN104016318 A CN 104016318A CN 201410274373 A CN201410274373 A CN 201410274373A CN 104016318 A CN104016318 A CN 104016318A
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- reductive agent
- charcoal element
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Abstract
The invention discloses a combined carbon reducing agent for yellow phosphorus production and a preparation method of the combined carbon reducing agent. The aggregate of the combined carbon reducing agent consists of coke powder and purified carbon powder, wherein a mass ratio of the coke powder to the purified carbon powder is 100: (1-25). The method for preparing the combined carbon reducing agent for yellow phosphorus production comprises the following steps: preheating, burdening, kneading, molding and roasting. The purified carbon powder obtained by performing flotation on an aluminum electrolysis waste cathode carbon block and undersize coke powder generated in yellow phosphorus industry are taken as raw materials, and the combined carbon reducing agent which meets the yellow phosphorus production process requirement is prepared. The industrial solid wastes are effectively utilized, the environment is protected, a low-price industrial reducing agent is prepared for the yellow phosphorus smelting enterprise, the production cost of the yellow phosphorus is reduced, and the economic benefits are improved.
Description
Technical field
The invention belongs to electrolysis of aluminum waste resource recycling field, field, be specifically related to a kind of phosphorus production combination charcoal element reductive agent and preparation method thereof.
Background technology
It is mainly aluminum cell waste cathode carbon block that aluminium electrolytic industry discharges a large amount of waste materials.According to statistics, the whole world approximately has 850,000 tons every year.The chief component of waste and old cathode carbon block is charcoal, accounts for 60% ~ 70%, and all the other are ionogen, account for 30% ~ 40%.Wherein electrolytical content and composition are different and different with electrolytical penetration degree and the damaged type of groove with the material of cathode carbon pieces, structure, groove age, metal, but mainly contain substantially Sodium Fluoride, sodium aluminum fluoride, aluminum oxide, Calcium Fluoride (Fluorspan) and sodium carbonate, aluminium carbide, prussiate etc.Charcoal in waste and old cathode carbon block is essentially graphitized charcoal, therefore by people, is called to graphite and ionogen whole composition of waste and old cathode carbon block, and it is actually a kind of artificial mineral resource.
Up to the present, waste and old cathode carbon block is still as waste residue air storage, and its consequence is appropriation of land, atmosphere pollution, prussiate wherein and the fluorochemical polluted source that permeates the ground again.So, process waste and old cathode carbon block and be not only the important content that resource reclaims, protection of the environment, the great cause that promotes the well-being of mankind especially, this point is accepted by people.
Phosphorus smelting often adopts coke as reductive agent, and for ensureing the interior good ventilation property of stove in phosphorus smelting process, requires coke to have certain intensity and granularity, and in phosphorus smelting, requiring the stove granularity that enters of coke is 3 ~ 25mm.Therefore the coke that, phosphorus smelting factory produces a large amount of granularity≤3mm by screening every year can not be utilized effectively.This part of coke powder is made together with the proposition carbon dust being made through flotation by aluminum electrolysis waste cathode carbon block or breeze to the combination charcoal element reductive agent that meets phosphorus production processing requirement; not only solve the problem of utilizing of Yellow Phosphorus Industry and electrolysis of aluminum industry solid waste; and save cost; improve the economic benefit of yellow phosphorus enterprise, all significant for Sustainable development and the protection of the environment of yellow phosphorus enterprise.
Summary of the invention
The first object of the present invention is to provide a kind of phosphorus production combination charcoal element reductive agent.
The second object of the present invention is to provide the preparation method of a kind of phosphorus production combination charcoal element reductive agent
The object of the invention the first object is achieved in that the aggregate of described combination charcoal element reductive agent is made up of coke powder and purification carbon dust, and the mass ratio of coke powder and purification carbon dust is 100:1 ~ 25.
The second object of the present invention is achieved in that the preparation method of described phosphorus production combination charcoal element reductive agent, comprises preheating batching, kneading, moulding, roasting, is specially following steps:
(1) preheating batching: the ratio that is 100:1 ~ 25 in mass ratio by coke powder and purification carbon dust is mixed; Be preheated to 120 ~ 180 DEG C, described coke powder is the coke granule of the central granularity≤3mm screening out of phosphorus smelting process, and described purification carbon dust is obtained through purification by floatation by aluminum electrolysis waste cathode carbon block or breeze;
(2) kneading: the mixture obtaining in step 1 is even with coal-tar pitch kneading in kneading pot of filtering through fragmentation and fusing;
(3) moulding: the thickener after kneading is added in vibrating forming machine and makes the pelletizing that diameter is 3 ~ 25mm, and pelletizing is cooled to 20 DEG C of aftershapings;
(4) roasting: the pelletizing of moulding is added to isolated air roasting in stoving oven, make it coking, when roasting, should slowly heat up, in 250 ~ 350h, slowly be warming up to 1100 ~ 1300 DEG C by 20 DEG C, and after being incubated 55 ~ 65h, naturally cooling obtains target compound combination charcoal element reductive agent.
The present invention is taking coke powder under the aluminum electrolysis waste cathode carbon block sieve that gained purification carbon dust and Yellow Phosphorus Industry produce after flotation as raw material, and preparation meets the combination charcoal element reductive agent of phosphorus production processing requirement.The present invention had both effectively utilized industrial solid castoff, had protected environment, had prepared again a kind of industrial reduction agent of cheapness for phosphorus smelting enterprise, had reduced phosphorus production cost, had improved economic benefit.
Brief description of the drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated, but must not be limited the present invention by any way, and any change or the improvement done based on training centre of the present invention, all belong to protection scope of the present invention.
As shown in drawings and Examples: combination charcoal element reductive agent for a kind of phosphorus production of the present invention, the aggregate of described combination charcoal element reductive agent is made up of coke powder and purification carbon dust, and the mass ratio of coke powder and purification carbon dust is 100:1 ~ 25.
Described coke powder is the coke granule of the central granularity≤3mm screening out of phosphorus smelting process.
Described purification carbon dust fixed carbon content is 90 ~ 95%, and ash content is 1 ~ 2%, and volatilization is divided into 6 ~ 9%.
The preparation method of combination charcoal element reductive agent for described phosphorus production, comprises preheating batching, kneading, moulding, roasting, is specially following steps:
(1) preheating batching: the ratio that is 100:1 ~ 25 in mass ratio by coke powder and purification carbon dust is mixed; Be preheated to 120 ~ 180 DEG C, described coke powder is the coke granule of the central granularity≤3mm screening out of phosphorus smelting process, and described purification carbon dust is obtained through purification by floatation by aluminum electrolysis waste cathode carbon block or breeze;
(2) kneading: the mixture obtaining in step 1 is even with coal-tar pitch kneading in kneading pot of filtering through fragmentation and fusing;
(3) moulding: the thickener after kneading is added in vibrating forming machine and makes the pelletizing that diameter is 3 ~ 25mm, and pelletizing is cooled to 20 DEG C of aftershapings;
(4) roasting: the pelletizing of moulding is added to isolated air roasting in stoving oven, make it coking, when roasting, should slowly heat up, in 250 ~ 350h, slowly be warming up to 1100 ~ 1300 DEG C by 20 DEG C, and after being incubated 55 ~ 65h, naturally cooling obtains target compound combination charcoal element reductive agent.
In step 4, in 250 ~ 350h, be slowly warming up to 1150 ~ 1250 DEG C by 20 DEG C, and after being incubated 58 ~ 62h, naturally cooling obtains target compound combination charcoal element reductive agent.
Described purification carbon dust is by aluminum electrolysis waste cathode or breeze fragmentation, is milled to granularity D90≤0.074mm, and adjusting pulp density is solid-liquid volume ratio 1 ~ 3:1, adds collecting agent, inhibitor, pore forming material, gained after ventilation flotation.
Described collecting agent is one or more combinations in solar oil, kerosene, gasoline and emulsifying product thereof, and collector dosage is 300 ~ 1000 g/t.
Described inhibitor is water glass, and described pore forming material is pine camphor oil.
In step 2, the add-on of coal-tar pitch is aggregate quality 15 ~ 17%, and kneading temperature is 140 ~ 200 DEG C, kneading time 40 ~ 160min.
Embodiment 1
By aluminum electrolysis waste cathode fragmentation, be milled to D
90≤ 0.074mm, adjusting ore pulp solid-liquid volume ratio is 2:1, adds emulsified kerosene, water glass, pine camphor oil to size mixing, ventilation flotation, gained froth product is purification carbon dust, in flotation cell, underflow is ionogen; In massfraction, in purification carbon dust, fixed carbon content is 91%, and ash content is 1.3%, and volatilization is divided into 7.7%; The coke powder that is 2mm by granularity and purification the carbon dust in mass ratio ratio of 100:20 are mixed to get aggregate, the coal-tar pitch through broken and fusing that adds aggregate quality mark 15% kneading 50 minutes at 170 DEG C, thickener after kneading is added and in vibrating forming machine, makes the pelletizing that diameter is 12mm, pelletizing is cooled to 20 DEG C of aftershapings, pelletizing after moulding enters stoving oven roasting, after 280h, be warming up to 1100 DEG C, at 1100 DEG C, be incubated 60h, then naturally cooling obtains combination charcoal element reductive agent, and roasting yield rate is more than 99%.
Embodiment 2
By aluminum electrolysis waste cathode fragmentation, be milled to D
90≤ 0.074mm, adjusting ore pulp solid-liquid volume ratio is 1:1, adds collecting agent, water glass, pine camphor oil to size mixing, collecting agent is pressed massfraction 3:1 mixed preparing by kerosene and gasoline, ventilation flotation, gained froth product is purification carbon dust, in flotation cell, underflow is ionogen; In massfraction, in purification carbon dust, fixed carbon content is 87.3%, and ash content is 1.9%, and volatilization is divided into 10.8%; The coke powder that is 2.5mm by granularity and purification the carbon dust in mass ratio ratio of 100:15 are mixed to get aggregate, the coal-tar pitch through broken and fusing that adds aggregate quality mark 17% kneading 50 minutes at 180 DEG C, thickener after kneading is added and in vibrating forming machine, makes the pelletizing that diameter is 12mm, pelletizing is cooled to 20 DEG C of aftershapings, pelletizing after moulding enters stoving oven roasting, after 300h, be warming up to 1300 DEG C, at 1300 DEG C, be incubated 70h, then naturally cooling obtains combination charcoal element reductive agent, and roasting yield rate is more than 98.5%.
Embodiment 3
By the useless electrolysis of aluminum breeze fragmentation producing, be milled to D
90≤ 0.074mm, adjusting ore pulp solid-to-liquid ratio is 3:1, adds kerosene, water glass, pine camphor oil and sizes mixing, composite collector is pressed massfraction 3:1 mixed preparing by kerosene and gasoline, the flotation of ventilating, gained froth product is purification carbon dust, in flotation cell, underflow is ionogen; In massfraction, in flotation carbon dust, fixed carbon content is 92.55%, and ash content is 0.89%, and volatilization is divided into 6.55%; The coke powder that is 1mm by granularity and purification the carbon dust in mass ratio ratio of 100:1 are mixed to get aggregate, the asphaltic liquid that adds aggregate quality mark 16% kneading 50 minutes at 160 DEG C, after moulding, enter stoving oven roasting, 260h is warming up to 1200 DEG C, at 1200 DEG C, be incubated 60h, then naturally cooling obtains combination charcoal element reductive agent, and roasting yield rate is more than 99.5%.
Embodiment 4
By the useless electrolysis of aluminum breeze fragmentation producing, be milled to D
90≤ 0.074mm, adjusting ore pulp solid-to-liquid ratio is 3:1, adds kerosene, water glass, pine camphor oil and sizes mixing, composite collector is pressed massfraction 5:3 mixed preparing by kerosene and gasoline, the flotation of ventilating, gained froth product is purification carbon dust, in flotation cell, underflow is ionogen; In massfraction, in flotation carbon dust, fixed carbon content is 90%, and ash content is 1.3%, and volatilization is divided into 6.55%; The coke powder that is 1.7mm by granularity and purification the carbon dust in mass ratio ratio of 100:20 are mixed to get aggregate, the asphaltic liquid that adds aggregate quality mark 16.5% kneading 100 minutes at 140 DEG C, after moulding, enter stoving oven roasting, 290h is warming up to 1150 DEG C, at 1150 DEG C, be incubated 65h, then naturally cooling obtains combination charcoal element reductive agent, and roasting yield rate is more than 99.8%.
Claims (9)
1. a combination charcoal element reductive agent for phosphorus production, is characterized in that the aggregate of described combination charcoal element reductive agent is made up of coke powder and purification carbon dust, and the mass ratio of coke powder and purification carbon dust is 100:1 ~ 25.
2. combination charcoal element reductive agent for a kind of phosphorus production according to claim 1, is characterized in that the coke granule of described coke powder for the central granularity≤3mm screening out of phosphorus smelting process.
3. combination charcoal element reductive agent for a kind of phosphorus production according to claim 1, is characterized in that described purification carbon dust fixed carbon content is 90 ~ 95%, and ash content is 1 ~ 2%, and volatilization is divided into 6 ~ 9%.
4. a preparation method for combination charcoal element reductive agent for phosphorus production as claimed in claim 1, is characterized in that comprising preheating batching, kneading, moulding, roasting, is specially following steps:
(1) preheating batching: the ratio that is 100:1 ~ 25 in mass ratio by coke powder and purification carbon dust is mixed; Be preheated to 120 ~ 180 DEG C, described coke powder is the coke granule of the central granularity≤3mm screening out of phosphorus smelting process, and described purification carbon dust is obtained through purification by floatation by aluminum electrolysis waste cathode carbon block or breeze;
(2) kneading: the mixture obtaining in step 1 is even with coal-tar pitch kneading in kneading pot of filtering through fragmentation and fusing;
(3) moulding: the thickener after kneading is added in vibrating forming machine and makes the pelletizing that diameter is 3 ~ 25mm, and pelletizing is cooled to 20 DEG C of aftershapings;
(4) roasting: the pelletizing of moulding is added to isolated air roasting in stoving oven, make it coking, when roasting, should slowly heat up, in 250 ~ 350h, slowly be warming up to 1100 ~ 1300 DEG C by 20 DEG C, and after being incubated 55 ~ 65h, naturally cooling obtains target compound combination charcoal element reductive agent.
5. the preparation method of combination charcoal element reductive agent for phosphorus production according to claim 3, it is characterized in that in 250 ~ 350h, being slowly warming up to 1150 ~ 1250 DEG C by 20 DEG C in step 4, and after being incubated 58 ~ 62h, naturally cooling obtains target compound combination charcoal element reductive agent.
6. the preparation method of combination charcoal element reductive agent for phosphorus production according to claim 3, is characterized in that described purification carbon dust is by aluminum electrolysis waste cathode or breeze fragmentation, is milled to granularity D
90≤ 0.074mm, adjusting pulp density is solid-liquid volume ratio 1 ~ 3:1, adds collecting agent, inhibitor, pore forming material, gained after ventilation flotation.
7. the preparation method of combination charcoal element reductive agent for phosphorus production according to claim 3, is characterized in that described collecting agent is one or more combinations in solar oil, kerosene, gasoline and emulsifying product thereof, and collector dosage is 300 ~ 1000 g/t.
8. according to claim 3, it is characterized in that the preparation method who combines charcoal element reductive agent for described phosphorus production; It is characterized in that described inhibitor is water glass, described pore forming material is pine camphor oil.
9. according to claim 3, it is characterized in that the preparation method who combines charcoal element reductive agent for described phosphorus production; The add-on that it is characterized in that coal-tar pitch in step 2 is aggregate quality 15 ~ 17%, and kneading temperature is 140 ~ 200 DEG C, kneading time 40 ~ 160min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014659A (en) * | 2021-11-05 | 2022-02-08 | 新疆农六师碳素有限公司 | Novel high-end carbon product material for aluminum and preparation method thereof |
| CN114408885A (en) * | 2021-12-28 | 2022-04-29 | 中节能工业节能有限公司 | Reducing agent for producing yellow phosphorus by thermal method and preparation method thereof |
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| CN1911790A (en) * | 2006-08-28 | 2007-02-14 | 云南师范大学 | Method for preparing yellow phosphorus from phosphate rock |
| CN102757324A (en) * | 2012-05-22 | 2012-10-31 | 山西阳煤丰喜肥业(集团)有限责任公司 | Method for producing formaldehyde from methanol under oxygen-rich condition and utilizing formaldehyde exhaust gas |
| CN102976327A (en) * | 2012-12-18 | 2013-03-20 | 昆明冶金研究院 | Composite carbonaceous reducing agent for smelting metal silicon and preparation method thereof |
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- 2014-06-19 CN CN201410274373.8A patent/CN104016318B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1911790A (en) * | 2006-08-28 | 2007-02-14 | 云南师范大学 | Method for preparing yellow phosphorus from phosphate rock |
| CN102757324A (en) * | 2012-05-22 | 2012-10-31 | 山西阳煤丰喜肥业(集团)有限责任公司 | Method for producing formaldehyde from methanol under oxygen-rich condition and utilizing formaldehyde exhaust gas |
| CN102976327A (en) * | 2012-12-18 | 2013-03-20 | 昆明冶金研究院 | Composite carbonaceous reducing agent for smelting metal silicon and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014659A (en) * | 2021-11-05 | 2022-02-08 | 新疆农六师碳素有限公司 | Novel high-end carbon product material for aluminum and preparation method thereof |
| CN114014659B (en) * | 2021-11-05 | 2022-12-13 | 新疆农六师碳素有限公司 | Novel high-end carbon product material for aluminum and preparation method thereof |
| CN114408885A (en) * | 2021-12-28 | 2022-04-29 | 中节能工业节能有限公司 | Reducing agent for producing yellow phosphorus by thermal method and preparation method thereof |
| CN114408885B (en) * | 2021-12-28 | 2023-08-29 | 中节能工业节能有限公司 | Reducing agent for producing yellow phosphorus by thermal method and preparation method thereof |
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Address after: 650031 No. 86 Yuantong North Road, Yunnan, Kunming Patentee after: Kunming Metallurgical Research Institute Co.,Ltd. Address before: 650031 No. 86 Yuantong North Road, Yunnan, Kunming Patentee before: KUNMING METALLURGICAL Research Institute |
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