CN105710360A - Production technology for drainage agent - Google Patents
Production technology for drainage agent Download PDFInfo
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- CN105710360A CN105710360A CN201610244255.1A CN201610244255A CN105710360A CN 105710360 A CN105710360 A CN 105710360A CN 201610244255 A CN201610244255 A CN 201610244255A CN 105710360 A CN105710360 A CN 105710360A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/44—Consumable closure means, i.e. closure means being used only once
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- Mechanical Engineering (AREA)
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Abstract
The invention provides a production technology for a drainage agent and belongs to the technical field of metal smelting. Gas provided by a gas generator is combusted in a hot blast stove to serve as a heat source, and various raw materials are dried in a heatable roller brick bed firstly; then the raw materials are cooled through air cooling and conveyed into corresponding bins, automatic discharging and carbon adding are conducted according to the ratio of a formula, and even stirring is conducted in a closed stirring tank; and then automatic packaging is conducted, and warehousing is conducted. A full-automatic production line is adopted for the integral technology, stability of the product quality is ensured, in addition, the number of working personnel is reduced, and the labor cost is reduced; and meanwhile, the influences of human factors on the product quality are also greatly reduced, dust removing devices are arranged for links where dust is liable to be generated on the heatable roller brick bed and the sealed stirring tank so that generated dust can be collected and removed, dust pollution is reduced, the environment-friendly standard is improved, and clean and efficient production is achieved.
Description
Technical field
The invention belongs to metal smelt technical field, be specifically related to the production technology of a kind of drainage agent.
Background technology
Steel ladle drainage agent belongs to a kind of amorphous refractory, adds in ladle upper nozzle, continuous casting steel unwrap in the process of watering can automatic casting, make production process continuously and ensure whole process protection casting, being a kind of required refractory material.
Due to iron and steel production capacity surplus in recent years, iron and steel enterprise is in slight diarrhea or even lossing state mostly, iron and steel enterprise significantly compresses the procurement price of crude fuel to increase profit margin, and steel ladle drainage agent is as a kind of required refractory material, procurement price continues to reduce, and the prices such as the raw material used such as imported from South Africa chrome ore are climbing up and up, in order to promote profit margin, must reducing cost at middle production link, therefore improvement of production process reduction process cost is extremely urgent.Additionally, Environmental Protection in China situation is increasingly severe, original production technology can not meet increasingly higher environmental requirement, and the production technology adopting a kind of high-environmental standard is imperative.Existing steel ladle drainage agent is adopt artificial mixed material mostly, then adds water and joins carbon, then adopts elevator to carry to sand dryer and even adopts adobe kang to dry, and then natural cooling is packed, warehouse-in.The workman of this kind of technique needs is many, adds human cost and the anthropic factor stability to product and also has a great impact, and this type of drying plant is all adopt fire coal to provide thermal source in addition, and efficiency of utilization is low, and environmental pollution is serious.
Summary of the invention
The technical problem to be solved is, for the deficiencies in the prior art, it is provided that the production technology of a kind of drainage agent, significantly reduces the labor intensity of workman, and environmental protection standard is high, improves steel quality and effectively guarantees the direct motion of continuous casting process.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: the production technology of a kind of drainage agent, formula for a product is the chrome ore comprising 60～70 parts, the alumina balls of 5～15 parts, the Desert Sand of 20～30 parts and 1～5 part of properties modifier, described properties modifier be crystalline flake graphite, in the mixing of super white carbon black and semi-reinforcing hydrocarbon black arbitrary proportion；Cr in chrome ore2O3Content >=45%, particle diameter is 0.2～0.9mm, and 80 order≤3%, 20 order≤2%, moisture content≤0.5%, weight percentage；SiO in Desert Sand2Content >=94%, particle diameter is 0.5～1.2mm；Carry out in the steps below:
A, granularity requirements according to formula for a product Raw, be sized to corresponding grade respectively by chrome ore and Desert Sand, the composition of each raw material after metering screening, it is ensured that Cr in chrome ore2O3Content >=45%, SiO in Desert Sand2Content >=94%, then by on-the-spot to baking material for each feedstock delivery of meeting formula regulation；
B, it is utilized respectively belt conveyor and is delivered in cylinder a heatable brick bed, utilizing the coal gas produced by gas generator to burn in air stove provides hot blast to dry, the rotating speed of cylinder a heatable brick bed is controlled at 300 revs/min by drying course, air inducing temperature controls at 150 DEG C, make the biodiversity percentage composition < 0.1% in each raw material after drying, when drying different material, need first by clean for the raw material handling in cylinder a heatable brick bed, another kind of raw material can be dried, separation cyclone scrubber is connected in the exit of cylinder a heatable brick bed, the dust produced in drying course is easily separated collection, reach the effect of dedusting；
C, by each feedstock transportation after drying in air-cooled cylinder a heatable brick bed, carrying out wind cooling temperature lowering, make air-cooled after each raw material in biodiversity percentage composition < 0.1% and temperature≤200 DEG C；
D, each raw material after air-cooled is sampled inspection, it is ensured that the biodiversity percentage composition < 0.1% of each raw material；
E, the qualified each raw material of inspection is delivered to respectively through conveyer device the feed bin specified stores, indicate；
F, according to the material rate in formula for a product, according to the production tonnage of each 2,5,8 or 10 tons, calculated the quality of every kind of raw material by Microcomputer Burden System, automatically control blanking and be delivered in closing agitator tank, it is ensured that quality of production error < 5kg every time；
G, by crystalline flake graphite, in the carbonaceous material that mixes with arbitrary proportion of super white carbon black and semi-reinforcing hydrocarbon black by independent bin blanking to closing in agitator tank, control mixing time at 10min, obtain finished product, close agitator tank exit connection separation cyclone scrubber and carry out dedusting；
H, gained finished product is sampled inspection, it is ensured that moisture content of finished products weight/mass percentage composition < 0.1%；I, utilize elevator by checking qualified finished product to be delivered in high-order storage tank, prepare packaging continuously；
J, according to packing instructions, control every bag of error in dipping < 0.5kg/ bag；
K, employing automatic packaging machine are packed, the temperature < in packaging process 60 DEG C, the weight/mass percentage composition < 0.1% of moisture；
L, finally by packaging after finished product warehouse-in preserve.
Beneficial effects of the present invention is as follows:
It is thermal source that the present invention adopts the coal gas that gas generator provides to burn in air stove, is first dried in cylinder a heatable brick bed by various raw materials, then utilizes air-cooled cooling, it is delivered in the feed bin of correspondence, adds carbon according to formulation ratio automatic blanking, mix homogeneously in closing agitator tank, then automatically pack, warehouse-in.Integrated artistic of the present invention adopts automatic production line, both ensure that stablizing of product quality, and had decreased again operating personnel's quantity, reduces human cost, also significantly reduces the anthropic factor impact on product quality simultaneously.
Generally, drainage agent sintering character in the mouth of a river, dilatancy are had a great impact, and then affect self-opening rate by the granularmetric composition of stuffing sand, and based on this, corresponding production technology must be got the raw materials ready, and namely pulverize and/or screening link, make raw material be in the grade of regulation.Secondly, the moisture in drainage agent must be strict controlled in the scope of regulation, and initial feed moisture is higher, it is necessary to carries out drying and processing.After drying, owing to temperature is higher, being not suitable for direct batch mixing, it is necessary to cool down further, in order to reduce bringing into of moisture, the present invention adopts air-cooled mode to process, simultaneously the content of moisture in strict control raw material.After raw material after air-cooled carries out automatic gauge, then join carbonaceous material, stirring and evenly mixing, get product.The present invention adopts gas-fired to provide thermal source, efficiency of utilization is high, reduce toxic emission, simultaneously at cylinder a heatable brick bed and close agitator tank and be easily generated the link of dust and be provided with cleaner, so that the dust produced is collected and removes, reduce dust pollution, improve environmental protection standard, it is achieved that clean, efficiently produce.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1: the technological process of production schematic diagram of the present invention；
Wherein, A-coal gas, B-hot blast, C, D-conveyer device, E-elevator.
Detailed description of the invention
In order to enable those skilled in the art to better understand the present invention, in conjunction with accompanying drawing 1, it is specifically set forth below.Consult Fig. 1, the production technology of drainage agent of the present invention, can carry out in the steps below:
A, get the raw materials ready: according to production requirement, by satisfactory each material screening to corresponding grade, then each raw material ratio on request after screening is measured, by on-the-spot to baking material for the various feedstock delivery measured；
B, dry: the above-mentioned each raw material being transported to baking material scene is utilized respectively conveyer device and is delivered in cylinder a heatable brick bed, utilizing the coal gas produced by gas generator to burn in air stove provides hot blast to dry, in drying course, the rotating speed of cylinder a heatable brick bed is controlled at 300～600 revs/min by the original moisture according to each raw material, air inducing temperature controls at 150～250 DEG C, make the biodiversity percentage composition < 0.1% in each raw material after drying, when drying different material, need first by clean for the raw material handling in cylinder a heatable brick bed, another kind of raw material can be dried, the exit of described cylinder a heatable brick bed connects separation cyclone scrubber；
C, air-cooled: by each feedstock transportation after drying to air-cooled cylinder a heatable brick bed, to carry out wind cooling temperature lowering, make air-cooled after each raw material in biodiversity percentage composition < 0.1% and temperature≤200 DEG C；
D, the examination of materials: conventionally method of inspection sampling inspection above-mentioned air-cooled after each raw material, it is ensured that the biodiversity percentage composition < 0.1% of each raw material；
E, feeding: each acceptable material after air-cooled is delivered to respectively through conveyer device the feed bin specified and stores, indicate, standby；
F, Microcomputerized dosing: according to the material rate in formula for a product, according to the production tonnage of each 2～10 tons, calculated the quality of every kind of material by Microcomputer Burden System, automatically control blanking and be delivered in closing agitator tank, it is desirable to quality of production error < 5kg every time；
G, stirring: by the carbonaceous material such as white carbon black, crystalline flake graphite by independent bin blanking to closing in agitator tank, according to product quality requirement, control mixing time at 10～30min, obtain finished product, closes agitator tank exit connection separation cyclone scrubber and carries out dedusting；
H, product inspection: conventionally method of inspection sampling inspection gained finished product, it is ensured that the weight/mass percentage composition < 0.1% of moisture；
I, conveying: be delivered in high-order storage tank by elevator by finished product, prepare packaging continuously；
J, metering: according to packing instructions, control every bag of error in dipping < 0.5kg/ bag；
K, packaging: according to customer requirement, and adopt automatic packaging machine to pack, packaging process to guarantee temperature < 60 DEG C, the weight/mass percentage composition < 0.1% of moisture；
L, warehouse-in: the finished product warehouse-in after packaging is preserved.
In order to be further elucidated with the present invention in more detail, provide the following example, but these are not intended that limitation of the present invention.
Embodiment one
Certain steel mill's ladle draining sand, formula for a product is the chrome ore comprising 60～70 parts, the alumina balls of 5～15 parts, the Desert Sand of 20～30 parts and 1～5 part of properties modifier, described properties modifier be crystalline flake graphite, in the mixing of super white carbon black and semi-reinforcing hydrocarbon black arbitrary proportion；Wherein, Cr in chrome ore2O3Content >=45%, particle diameter is 0.2～0.9mm, and 80 order≤3%, 20 order≤2%, moisture content≤0.5%, weight percentage；SiO in Desert Sand2Content >=94%, particle diameter is 0.5～1.2mm.
The production technology adopting drainage agent of the present invention produces above-mentioned drainage agent, can carry out in the steps below:
A, granularity requirements according to formula for a product Raw, be sized to corresponding grade respectively by chrome ore and Desert Sand, the composition of each raw material after metering screening, it is ensured that Cr in chrome ore2O3Content >=45%, SiO in Desert Sand2Content >=94%, then by on-the-spot to baking material for each feedstock delivery of meeting formula regulation；B, it is utilized respectively belt conveyor and is delivered in cylinder a heatable brick bed, utilizing the coal gas produced by gas generator to burn in air stove provides hot blast to dry, the rotating speed of cylinder a heatable brick bed is controlled at 300 revs/min by drying course, air inducing temperature controls at 150 DEG C, make the biodiversity percentage composition < 0.1% in each raw material after drying, when drying different material, need first by clean for the raw material handling in cylinder a heatable brick bed, another kind of raw material can be dried, separation cyclone scrubber is connected in the exit of cylinder a heatable brick bed, the dust produced in drying course is easily separated collection, reach the effect of dedusting；C, by each feedstock transportation after drying in air-cooled cylinder a heatable brick bed, carrying out wind cooling temperature lowering, make air-cooled after each raw material in biodiversity percentage composition < 0.1% and temperature≤200 DEG C；D, each raw material after air-cooled is sampled inspection, it is ensured that the biodiversity percentage composition < 0.1% of each raw material；E, the qualified each raw material of inspection is delivered to respectively through conveyer device the feed bin specified stores, indicate；F, according to the material rate in formula for a product, according to the production tonnage of each 2,5,8 or 10 tons, calculated the quality of every kind of raw material by Microcomputer Burden System, automatically control blanking and be delivered in closing agitator tank, it is ensured that quality of production error < 5kg every time；G, by crystalline flake graphite, in the carbonaceous material that mixes with arbitrary proportion of super white carbon black and semi-reinforcing hydrocarbon black by independent bin blanking to closing in agitator tank, control mixing time at 10min, obtain finished product, close agitator tank exit connection separation cyclone scrubber and carry out dedusting；H, gained finished product is sampled inspection, it is ensured that moisture content of finished products weight/mass percentage composition < 0.1%；I, utilize elevator by checking qualified finished product to be delivered in high-order storage tank, prepare packaging continuously；J, according to packing instructions, control every bag of error in dipping < 0.5kg/ bag；K, employing automatic packaging machine are packed, the temperature < in packaging process 60 DEG C, the weight/mass percentage composition < 0.1% of moisture；L, finally by packaging after finished product warehouse-in preserve.
Embodiment two
Certain steel mill's ladle draining sand, formula for a product is chromium sand 60～76%, wherein the Cr in chromium sand2O3Weight/mass percentage composition >=45%；Sea sand 10～20%, alumina balls 4～9%, Desert Sand 4～9%, potash feldspar 3～5%, carbon black 0.3～0.8%, crystalline flake graphite 0.3～1.0%.The production technology adopting drainage agent of the present invention produces above-mentioned steel ladle drainage agent, and its production stage is identical with embodiment one, the difference is that: step B, in drying course, the rotating speed of cylinder a heatable brick bed is controlled at 450 revs/min, air inducing temperature controls at 200 DEG C；Step G, is extremely closed carbon black and crystalline flake graphite in agitator tank by independent bin blanking, controls mixing time at 20min, obtain finished product.
Embodiment three
Certain steel mill's steel ladle drainage agent is made up of following raw materials according: its percent mass proportioning is as follows: chromium sand 50～80%, Quartz Album sand 10～30%, fused magnesite 8～20%, each raw material granularity controls in claimed range.
The production technology adopting steel ladle drainage agent of the present invention produces above-mentioned steel ladle drainage agent, and its production stage is identical with embodiment one, the difference is that: step B, in drying course, the rotating speed of cylinder a heatable brick bed is controlled at 300 revs/min, air inducing temperature controls at 150 DEG C；Step G, by fused magnesite by independent bin blanking to closing in agitator tank, controls mixing time at 30min, obtains finished product.
Claims (1)
1. the production technology of a drainage agent, it is characterized in that, formula for a product is the chrome ore comprising 60～70 parts, the alumina balls of 5～15 parts, the Desert Sand of 20～30 parts and 1～5 part of properties modifier, described properties modifier be crystalline flake graphite, in the mixing of super white carbon black and semi-reinforcing hydrocarbon black arbitrary proportion；Cr in chrome ore2O3Content >=45%, particle diameter is 0.2～0.9mm, and 80 order≤3%, 20 order≤2%, moisture content≤0.5%, weight percentage；SiO in Desert Sand2Content >=94%, particle diameter is 0.5～1.2mm；Carry out in the steps below:
A, granularity requirements according to formula for a product Raw, be sized to corresponding grade respectively by chrome ore and Desert Sand, the composition of each raw material after metering screening, it is ensured that Cr in chrome ore2O3Content >=45%, SiO in Desert Sand2Content >=94%, then by on-the-spot to baking material for each feedstock delivery of meeting formula regulation；
B, it is utilized respectively belt conveyor and is delivered in cylinder a heatable brick bed, utilizing the coal gas produced by gas generator to burn in air stove provides hot blast to dry, the rotating speed of cylinder a heatable brick bed is controlled at 300 revs/min by drying course, air inducing temperature controls at 150 DEG C, make the biodiversity percentage composition < 0.1% in each raw material after drying, when drying different material, need first by clean for the raw material handling in cylinder a heatable brick bed, another kind of raw material can be dried, separation cyclone scrubber is connected in the exit of cylinder a heatable brick bed, the dust produced in drying course is easily separated collection, reach the effect of dedusting；
C, by each feedstock transportation after drying in air-cooled cylinder a heatable brick bed, carrying out wind cooling temperature lowering, make air-cooled after each raw material in biodiversity percentage composition < 0.1% and temperature≤200 DEG C；
D, each raw material after air-cooled is sampled inspection, it is ensured that the biodiversity percentage composition < 0.1% of each raw material；
E, the qualified each raw material of inspection is delivered to respectively through conveyer device the feed bin specified stores, indicate；
F, according to the material rate in formula for a product, according to the production tonnage of each 2,5,8 or 10 tons, calculated the quality of every kind of raw material by Microcomputer Burden System, automatically control blanking and be delivered in closing agitator tank, it is ensured that quality of production error < 5kg every time；
G, by crystalline flake graphite, in the carbonaceous material that mixes with arbitrary proportion of super white carbon black and semi-reinforcing hydrocarbon black by independent bin blanking to closing in agitator tank, control mixing time at 10min, obtain finished product, close agitator tank exit connection separation cyclone scrubber and carry out dedusting；
H, gained finished product is sampled inspection, it is ensured that moisture content of finished products weight/mass percentage composition < 0.1%；I, utilize elevator by checking qualified finished product to be delivered in high-order storage tank, prepare packaging continuously；
J, according to packing instructions, control every bag of error in dipping < 0.5kg/ bag；
K, employing automatic packaging machine are packed, the temperature < in packaging process 60 DEG C, the weight/mass percentage composition < 0.1% of moisture；
L, finally by packaging after finished product warehouse-in preserve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610244255.1A CN105710360B (en) | 2015-01-12 | 2015-01-12 | A kind of production technology of drainage agent |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610244255.1A CN105710360B (en) | 2015-01-12 | 2015-01-12 | A kind of production technology of drainage agent |
| CN201510013460.2A CN104557090B (en) | 2015-01-12 | 2015-01-12 | A kind of production technique of steel ladle drainage agent |
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| CN201510013460.2A Division CN104557090B (en) | 2015-01-12 | 2015-01-12 | A kind of production technique of steel ladle drainage agent |
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| CN105710360A true CN105710360A (en) | 2016-06-29 |
| CN105710360B CN105710360B (en) | 2018-06-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202055A (en) * | 2018-11-27 | 2019-01-15 | 河南通宇冶材集团有限公司 | A kind of excellent special steel drainage agent and preparation method thereof |
| CN110329564A (en) * | 2019-07-23 | 2019-10-15 | 乌兰察布市西蒙鼎新技术开发有限公司 | A kind of anti-segregation production packing method of metal smelt stuffing sand |
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| CN1158772A (en) * | 1996-10-30 | 1997-09-10 | 刘德生 | Drainage agent for steel casting and preparation method thereof |
| JPH09314314A (en) * | 1996-05-31 | 1997-12-09 | Nisshin Steel Co Ltd | Nozzle device for pouring molten metal in molten metal vessel and method for pouring molten metal |
| CN1382546A (en) * | 2002-03-05 | 2002-12-04 | 吴登来 | Draining ageng made of chromium |
| CN101543890A (en) * | 2008-03-28 | 2009-09-30 | 徐兆督 | Drainage agent for automatic steel-pouring of ladle in smelting process |
| CN102248155A (en) * | 2011-07-28 | 2011-11-23 | 西峡县隆达耐材有限责任公司 | Refining drainage agent and preparation method thereof |
| CN102746010A (en) * | 2012-07-25 | 2012-10-24 | 洛阳市科丰冶金新材料（集团）有限公司 | Chromium-aluminum steel ladle drainage sand |
| CN103506614A (en) * | 2013-10-17 | 2014-01-15 | 河南通宇冶材集团有限公司 | Drainage agent special for high manganese steel |
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2015
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09314314A (en) * | 1996-05-31 | 1997-12-09 | Nisshin Steel Co Ltd | Nozzle device for pouring molten metal in molten metal vessel and method for pouring molten metal |
| CN1158772A (en) * | 1996-10-30 | 1997-09-10 | 刘德生 | Drainage agent for steel casting and preparation method thereof |
| CN1382546A (en) * | 2002-03-05 | 2002-12-04 | 吴登来 | Draining ageng made of chromium |
| CN101543890A (en) * | 2008-03-28 | 2009-09-30 | 徐兆督 | Drainage agent for automatic steel-pouring of ladle in smelting process |
| CN102248155A (en) * | 2011-07-28 | 2011-11-23 | 西峡县隆达耐材有限责任公司 | Refining drainage agent and preparation method thereof |
| CN102746010A (en) * | 2012-07-25 | 2012-10-24 | 洛阳市科丰冶金新材料（集团）有限公司 | Chromium-aluminum steel ladle drainage sand |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202055A (en) * | 2018-11-27 | 2019-01-15 | 河南通宇冶材集团有限公司 | A kind of excellent special steel drainage agent and preparation method thereof |
| CN110329564A (en) * | 2019-07-23 | 2019-10-15 | 乌兰察布市西蒙鼎新技术开发有限公司 | A kind of anti-segregation production packing method of metal smelt stuffing sand |
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| CN105710360B (en) | 2018-06-15 |
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