CN104073269A - Deep maintenance method on coke-oven charcoal bottom bricks - Google Patents
Deep maintenance method on coke-oven charcoal bottom bricks Download PDFInfo
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- CN104073269A CN104073269A CN201310105761.9A CN201310105761A CN104073269A CN 104073269 A CN104073269 A CN 104073269A CN 201310105761 A CN201310105761 A CN 201310105761A CN 104073269 A CN104073269 A CN 104073269A
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Abstract
The invention relates to a deep maintenance method on coke-oven charcoal bottom bricks. The method comprises the following steps: (1) controlling the oven temperature; (2) carrying out thermal insulation and maintaining the temperature at 850 DEG C; (3) adding an interval type roof protection; (4) applying a safety protection technology for constructors in a limited space; (5) controlling the construction quality of charcoal bottom bricks; (6) applying a furnace end silicon brick thermal insulation and gap treatment technology, constructing the furnace ends on the machine side and the coke side, grouting; (7) applying a whole discharge charcoal bottom brick buffer protection technology, carrying out maintenance and temperature rising control after the construction; (8) carrying out a buffer protection control when the coke-oven is used for production for the first time. The method solves the problems that operators cannot enter a small and high temperature space, and replaces the common silicon bricks, which is easy to explode at a high temperature, with zero-expansion silicon bricks. At the same time, the great oven temperature rising is avoided, the construction brick quality is guaranteed, the service life of coke oven body is prolonged, the construction speed is fast, the maintenance time is greatly shortened, the labor strength is reduced, and the safety of constructors is guaranteed.
Description
Technical field
The present invention relates to brick method for maintaining at the bottom of a kind of coke oven charcoal, relate in particular to a kind of more than 850 DEG C high temperature shape
Under state, operating personnel enter coke furnace carbonization chamber central position to coke oven charcoal at the bottom of brick degree of depth method for maintaining.
Background technology
There is the badly damaged phenomenon of brick at the bottom of the whole row's charcoal of coking chamber in plum steel pit kiln, severity is beyond imagination, method for maintaining in the past cannot be repaired damaged location, domestic colleague's maintenance process method also cannot be used for reference use, if can not on-call maintenance, this coking chamber is produced just in stopping production closing condition, and has a strong impact on the performance of adjacent coking chamber production capacity.Can the height of maintenance construction quality be directly connected to subsequent production and stablize and carry out, be related to the work-ing life of this coking chamber and adjacent coking chamber, even likely cause this coking chamber to produce.At the bottom of the charcoal of most domestic pit kiln, brick is local damage, in maintenance construction, personnel generally do not need to enter in coking chamber, what adopt is also common silica brick or high alumina brick, in Control for Kiln Temperature, take to lower the temperature and even under normal temperature, construct, thereby the maintenance technique that each producer adopts is different, but which kind of maintenance process all can not be applicable to the maintenance of plum steel pit kiln.By retrieval, number of patent application: CN200510022311.9 title: a kind of hot-state repair method of bottom refractory brick for coke furnace carbonization chamber; Number of patent application: 201010151098.2 titles: hot patching process for bottom brick of carbonization chamber of coke oven.All, for furnace bottom or the furnace wall damaged location maintenance nearby of coke furnace carbonization chamber machine, coke side, adopt high alumina brick to do use material, operating personnel enters and in coking chamber, is no more than 3000mm.In prior art, disclosed method all can not overcome above-mentioned technical problem, and therefore, a kind of new method of exigence solves above-mentioned technical problem.
Summary of the invention
The object of the present invention is to provide a kind of more than 850 DEG C under state of temperature, operating personnel enters and in coking chamber, adopts zero thermal expansion silica brick to build the construction technology of brick at the bottom of whole row's charcoal by laying bricks or stones, mainly solve the whole row's charcoal of coking chamber at the bottom of brick damage the insoluble problem of conventional repair technology.Adopt this Technology to carry out thermal state depth and build brick operation at the bottom of coking chamber charcoal by laying bricks or stones, can reduce labour intensity, guarantee construction operation personal security, guarantee to lay bricks smooth, mortar is full, the quality of brick masonry structures is high, the speed of building by laying bricks or stones shortens servicing time soon, greatly.
To achieve these goals, technical scheme of the present invention is as follows, and at the bottom of coke oven charcoal, brick degree of depth method for maintaining, is characterized in that, said method comprising the steps of; 1) Control for Kiln Temperature, reduces furnace temperature according to temperature control technology scheme and is controlled within the scope of 850 DEG C-950 DEG C before construction; 2) 850 DEG C of heat-insulation and heat-preservations, field fabrication is also carried out coking chamber metope and the heat insulation safeguards of furnace bottom; 3) compartment top protection, field fabrication is also installed top safeguards; 4) workmen's safety protection technique in the finite space, on-the-spot ventilation, the heat insulation facility installed, carries out workmen's safety precaution in the finite space; 5) brick masonry quality control at the bottom of charcoal, personnel enter in coking chamber and carry out maintenance construction, and cleaning damaged location, builds new brick by laying bricks or stones, and installation quality control techniques requires to carry out process control; 6) insulation of burner position silica brick and gap treatment technology, coking chamber machine, burner position, burnt both sides are built by laying bricks or stones and are in the milk; 7) entirely arrange brick buffer protection technology at the bottom of charcoal, the maintenance after construction and heating up is controlled; 8) the buffer protection control of putting into production first after construction and moving.
As a modification of the present invention, in described step 1, Control for Kiln Temperature detailed process is, before confirmation construction starts, 5 order of classes or grades at school start cooling, in advance heat (batch) number two side combusion chambers to maintenance, lower the temperature toward the buffering combustion chamber of both sides again, target furnace temperature, adjacent two side combusion chambers are 1020 DEG C of pusher sides, 1050 DEG C of coke sides, end flue temperature control 900-950 DEG C; Buffering combustion chamber is 1120 DEG C of pusher sides, 1160 DEG C of coke sides, and end flue temperature is controlled at 1050 DEG C; Cooling rate is undertaken by 50 DEG C/class, after Insulation is implemented when construction, guarantees that metope temperature is greater than 850 DEG C, after construction finishes, while recovering furnace temperature, adjacent two side combusion chambers are by 50 DEG C of/class of intensifications, buffering combustion chamber is by 20 DEG C ~ 30 DEG C of/class of intensifications, until temperature reaches normal standard temperature.
As a modification of the present invention, in described step 2,850 DEG C of heat-insulation and heat-preservations are specially, the ceramic fiber blanket of the long 1900mm of field by using, wide 600mm, thick 25mm, be labelled to high temperature glue on the metope that needs insulation, the fissure of displacement pastes two-layer, two-layer ceramic tapetum fibrosum for bottom of carbonization chamber, the ceramic fiber cloth that one deck 5mm is thick are carried out place mat, operation successively, affix to coke side from coking chamber pusher side whole, top seals top with special arched frame, builds the rectangular parallelepiped construction case of a flat in whole coking chamber.
As a modification of the present invention, the top protection of described step 3 compartment is specially, and adopts special arch top jam on coking chamber metope, and whole coking chamber can be paved with 15 arch tops, and ceramic fiber blanket is inserted in adjacent top, arch top.
As a modification of the present invention, in described step 4 finite space, workmen's safety protection technique is specially, and has increased tubular type ventilation system in coking chamber, has increased explosion-proof axial flow fan and carry out pump drainage wind near machine, coke side fire door.
As a modification of the present invention, at the bottom of described step 5 charcoal, brick masonry quality control concrete operations are, build by laying bricks or stones frontly by clean furnace bottom garbage-cleaning, guarantee that the furnace bottom bottom second layer is smooth, as the second layer has breakage, carry out equating with phosphoric acid chamotte; At the bottom of charcoal, brick is progressively built laterally from middle part, the skinning loam of laying bricks adopts the supporting pug of zero thermal expansion brick, often build i.e. 6 bricks of 1050mm by laying bricks or stones, stay dilatation joint 3mm, in dilatation joint, put into filler, it is the trapezoidal plank of thick 3mm, build by laying bricks or stones require at the bottom of coking chamber smooth, brickwork joint mortar is full, forbid reverse faulting of slab ends, permissible error 1mm, in building process, often building one by laying bricks or stones need ride on adjacent silica brick and carry out planeness adjustment with the level bar of long 400mm, often builds six by laying bricks or stones and need carry out reverse faulting of slab ends inspection with the long chi of long 1000mm.
As a modification of the present invention, silica brick insulation in described step 6 burner position is specially with gap treatment technology, and machine, burner top, burnt both sides metope adopt arch top and plug-in ceramic fiber cloth door curtain made of cloth heat-insulation and heat-preservation; Gap at the bottom of stove frame and gap, burner position, charcoal between brick and stove frame nog plate adopts 817 silicon phosphate chamotte grouting, smears benefit, lower than brick at the bottom of charcoal, guarantees surface smoothing slightly.
As a modification of the present invention, at the bottom of the full row of described step 7 charcoal, brick buffer protection technology is specially, before coalingging, and the thick plank of brick top lay one deck 45mm at the bottom of charcoal, plank at high temperature charing becomes charcoal, and charcoal is comparatively loose, lubricated.
With respect to prior art, tool of the present invention has the following advantages, the invention provides a kind of more than 850 DEG C under state of temperature, operating personnel enters and in coking chamber, adopts zero thermal expansion silica brick to build the operating technique of brick at the bottom of whole row's charcoal by laying bricks or stones, the insoluble problem of conventional repair technology after mainly having solved at the bottom of the whole row's charcoal of coking chamber brick and damaging.Adopt this technology to carry out thermal state depth and build brick operation at the bottom of coking chamber charcoal by laying bricks or stones, solved operating personnel and cannot enter safely in the space of narrow and small, high temperature, use zero thermal expansion silica brick to substitute original silica brick and solved a difficult problem for the easy explosion of common silica brick under high temperature; Can avoid significantly lifting of furnace temperature simultaneously, avoid other position silica brick of coking chamber to be subject to compared with macrolesion, can guarantee that the quality of brick masonry structures soon, greatly shortens servicing time, reduces labour intensity, guarantees construction operation personal security with prolongation coke oven bulk lifetime, the speed of building by laying bricks or stones.
Brief description of the drawings
Fig. 1 is that coking chamber bottom brick is overhauled constructing structure schematic diagram;
In figure, 1 is arch top, and 2 is heat insulating door curtain, and 3 is brick at the bottom of charcoal, and 4 is coking chamber pusher side, and 5 is coking chamber coke side, and 6 is coking chamber metope, and 7 is metope lagging material, and 8 is bottom lagging material, and 9 is aerofoil fan.
Embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with the drawings and specific embodiments, the present invention is made further instructions and introduced.
embodiment 1:
Brick degree of depth method for maintaining at the bottom of coke oven charcoal, select a kind of zero thermal expansion silica brick, rate of expansion, in 0.2% left and right, substitutes the furnace bottom silica brick of coking chamber damaged location, can avoid silica brick under 850 DEG C of high temperature to occur seminess, and not need preheating, wear resistance also better before the use of zero thermal expansion silica brick.Said method comprising the steps of; 1) Control for Kiln Temperature, reduces furnace temperature according to temperature control technology scheme and is controlled within the scope of 850 DEG C-950 DEG C before construction; 2) 850 DEG C of heat-insulation and heat-preservations, field fabrication is also carried out coking chamber metope and the heat insulation safeguards of furnace bottom; 3) compartment top protection, field fabrication is also installed top safeguards; 4) workmen's safety protection technique in the finite space, on-the-spot ventilation, the heat insulation facility installed, carries out workmen's safety precaution in the finite space; 5) brick masonry quality control at the bottom of charcoal, personnel enter in coking chamber and carry out maintenance construction, and cleaning damaged location, builds new brick by laying bricks or stones, and installation quality control techniques requires to carry out process control; 6) insulation of burner position silica brick and gap treatment technology, coking chamber machine, burner position, burnt both sides are built by laying bricks or stones and are in the milk; 7) entirely arrange brick buffer protection technology at the bottom of charcoal, the maintenance after construction and heating up is controlled; 8) the buffer protection control of putting into production first after construction and moving.
As a modification of the present invention, in described step 1, Control for Kiln Temperature detailed process is, before confirmation construction starts, 5 order of classes or grades at school start cooling, in advance heat (batch) number two side combusion chambers to maintenance, lower the temperature toward the buffering combustion chamber of both sides again, target furnace temperature, adjacent two side combusion chamber's pusher sides 4 are that 1020 DEG C, coke side 5 are 1050 DEG C, end flue temperature control 900-950 DEG C; Buffering combustion chamber is 1120 DEG C of pusher sides, 1160 DEG C of coke sides, and end flue temperature is controlled at 1050 DEG C; Cooling rate is undertaken by 50 DEG C/class, after Insulation is implemented when construction, guarantees that metope temperature is greater than 850 DEG C, after construction finishes, while recovering furnace temperature, adjacent two side combusion chambers are by 50 DEG C of/class of intensifications, buffering combustion chamber is by 20 DEG C ~ 30 DEG C of/class of intensifications, until temperature reaches normal standard temperature.Can guarantee like this to overhaul stove, buffering furnace temperature basic synchronization arrival assigned temperature, most importantly control heat-up rate, can avoid or reduce silica brick surface and occur crackle.
As a modification of the present invention, for brick construction period at the bottom of maintenance charcoal, reduce the damage of other position silica brick of coking chamber, and protection construction operation personnel avoid scalding, the injury accidents such as heatstroke occur, need carry out heat-insulation and heat-preservation protective treatment to coking chamber metope 6, metope lagging material 7 is set, in described step 2,850 DEG C of heat-insulation and heat-preservations are specially, the long 1900mm of field by using, wide 600mm, the ceramic fiber blanket of thick 25mm, be labelled to high temperature glue on the metope that needs insulation, the fissure of displacement pastes two-layer, bottom of carbonization chamber is also provided with bottom lagging material 8, use two-layer ceramic tapetum fibrosum, the ceramic fiber cloth that one deck 5mm is thick is carried out place mat, operation successively, affix to coke side from coking chamber pusher side whole, top seals top with special arched frame, in whole coking chamber, build the rectangular parallelepiped construction case of a flat.Can keep temperature of furnace wall can protect again operating personnel.
As a modification of the present invention, the top protection of described step 3 compartment is specially, adopt special arch top 1, for example long 1000mm, wide 400mm left and right, size can freely change, jam is on coking chamber metope, and whole coking chamber can be paved with 15 arch tops, and ceramic fiber blanket is inserted in adjacent top, arch top.The protection of compartment top can keep construction area top furnace wall in addition in the condition of high temperature, protects below construction operation personnel to avoid high temperature simultaneously and scalds, avoids being injured by top pendant thing.
Operating personnel's working space is the small space of high 1700mm, wide 360mm, long 16000mm, and personnel can only side health and enter, and remedial operation is inconvenience extremely.In order to ensure personal security, except above-mentioned heat insulation guard technology, the operating personnel who enters charing indoor construction also will face high bake, Heat stroke, the unfavorable factor impact such as suffocate of the objectionable impuritiess such as dust, thereby strengthening operating personnel's individuality on thermo-lag basis, as a modification of the present invention, in described step 4 finite space, workmen's safety protection technique is specially, in coking chamber, increase tubular type ventilation system, a kind of long 2000mm's, 4 " steel pipes of same direction distribution air outlet, multistage can independent assortment structure, outside with hose connection clean compressed air source.Be intended to improve the operating environment in coking chamber, near machine, coke side fire door, increased explosion-proof axial flow fan 9 and carried out pump drainage wind.Construction operation personnel are divided into three groups simultaneously, work by turns, specify that workmen carries out the engineering time in coking chamber and must not exceed 3 minutes.
As a modification of the present invention, at the bottom of described step 5 charcoal, brick masonry quality control concrete operations are, build by laying bricks or stones frontly by clean furnace bottom garbage-cleaning, guarantee that the furnace bottom bottom second layer is smooth, as the second layer has breakage, carry out equating with phosphoric acid chamotte; At the bottom of charcoal, brick is progressively built laterally from middle part, the skinning loam of laying bricks adopts the supporting pug of zero thermal expansion brick, often build i.e. 6 bricks of 1050mm by laying bricks or stones, stay dilatation joint 3mm, in dilatation joint, put into filler, it is the trapezoidal plank of thick 3mm, build by laying bricks or stones require at the bottom of coking chamber smooth, brickwork joint mortar is full, forbid reverse faulting of slab ends, permissible error 1mm, in building process, often building one by laying bricks or stones need ride on adjacent silica brick and carry out planeness adjustment with the level bar of long 400mm, often builds six by laying bricks or stones and need carry out reverse faulting of slab ends inspection with the long chi of long 1000mm.
As a modification of the present invention, silica brick insulation in described step 6 burner position is specially with gap treatment technology, and it is heat insulating door curtain 2 that machine, burner top, burnt both sides metope adopt arch top and plug-in ceramic fiber cloth door curtain made of cloth heat-insulation and heat-preservation; Gap at the bottom of stove frame and gap, burner position, charcoal between brick and stove frame nog plate adopts 817 silicon phosphate chamotte grouting, smears benefit, lower than brick at the bottom of charcoal, guarantees surface smoothing slightly.
As a modification of the present invention; after construction; coaling for the first time and directly impact at the bottom of the charcoal of new maintenance brick and the excessive and brick at the bottom of damage charcoal of the burnt resistance of coking rear defence thrust; at the bottom of the full row of described step 7 charcoal, brick buffer protection technology is specially; before coalingging, the thick plank of brick top lay one deck 45mm at the bottom of charcoal, plank at high temperature charing becomes charcoal; charcoal is comparatively loose, lubricated, can effectively reduce that coke pushing current, protection are new builds brick at the bottom of charcoal.
It should be noted that above-described embodiment is only preferred embodiment of the present invention; be not for limiting protection scope of the present invention; being equal to of having done on the basis of such scheme replaced or substituted, and all belongs to protection scope of the present invention, and protection scope of the present invention is as the criterion with claims.
Claims (8)
1. brick degree of depth method for maintaining at the bottom of coke oven charcoal, is characterized in that, said method comprising the steps of; 1) Control for Kiln Temperature, reduces furnace temperature according to temperature control technology scheme and is controlled within the scope of 850 DEG C-950 DEG C before construction; 2) 850 DEG C of heat-insulation and heat-preservations, field fabrication is also carried out coking chamber metope and the heat insulation safeguards of furnace bottom; 3) compartment top protection, field fabrication is also installed top safeguards; 4) workmen's safety protection technique in the finite space, on-the-spot ventilation, the heat insulation facility installed, carries out workmen's safety precaution in the finite space; 5) brick masonry quality control at the bottom of charcoal, personnel enter in coking chamber and carry out maintenance construction, and cleaning damaged location, builds new brick by laying bricks or stones, and installation quality control techniques requires to carry out process control; 6) insulation of burner position silica brick and gap treatment technology, coking chamber machine, burner position, burnt both sides are built by laying bricks or stones and are in the milk; 7) entirely arrange brick buffer protection technology at the bottom of charcoal, the maintenance after construction and heating up is controlled; 8) the buffer protection control of putting into production first after construction and moving.
2. according to brick degree of depth method for maintaining at the bottom of the coke oven charcoal described in right 1, it is characterized in that, in described step 1, Control for Kiln Temperature detailed process is, confirm construction start before 5 order of classes or grades at school start cooling, in advance heat (batch) number two side combusion chambers to maintenance, lower the temperature toward the buffering combustion chamber of both sides again, target furnace temperature, adjacent two side combusion chambers are 1020 DEG C of pusher sides, 1050 DEG C of coke sides, end flue temperature control 900-950 DEG C; Buffering combustion chamber is 1120 DEG C of pusher sides, 1160 DEG C of coke sides, and end flue temperature is controlled at 1050 DEG C; Cooling rate is undertaken by 50 DEG C/class, after Insulation is implemented when construction, guarantees that metope temperature is greater than 850 DEG C, after construction finishes, while recovering furnace temperature, adjacent two side combusion chambers are by 50 DEG C of/class of intensifications, buffering combustion chamber is by 20 DEG C ~ 30 DEG C of/class of intensifications, until temperature reaches normal standard temperature.
3. according to brick degree of depth method for maintaining at the bottom of the coke oven charcoal described in right 1, it is characterized in that, in described step 2,850 DEG C of heat-insulation and heat-preservations are specially, the ceramic fiber blanket of the long 1900mm of field by using, wide 600mm, thick 25mm, be labelled to high temperature glue on the metope that needs insulation, the fissure of displacement pastes two-layer, two-layer ceramic tapetum fibrosum for bottom of carbonization chamber, the ceramic fiber cloth that one deck 5mm is thick are carried out place mat, operation successively, affix to coke side from coking chamber pusher side whole, top seals top with special arched frame, builds the rectangular parallelepiped construction case of a flat in whole coking chamber.
4. according to brick degree of depth method for maintaining at the bottom of the coke oven charcoal described in right 1, it is characterized in that, the top protection of described step 3 compartment is specially, and adopts special arch top jam on coking chamber metope, whole coking chamber can be paved with 15 arch tops, and ceramic fiber blanket is inserted in adjacent top, arch top.
5. according to brick degree of depth method for maintaining at the bottom of the coke oven charcoal described in right 1, it is characterized in that, in described step 4 finite space, workmen's safety protection technique is specially, and has increased tubular type ventilation system in coking chamber, has increased explosion-proof axial flow fan and carry out pump drainage wind near machine, coke side fire door.
6. according to brick degree of depth method for maintaining at the bottom of the coke oven charcoal described in right 1, it is characterized in that, at the bottom of described step 5 charcoal, brick masonry quality control concrete operations are, build by laying bricks or stones front by clean furnace bottom garbage-cleaning, guarantee that the furnace bottom bottom second layer is smooth, as the second layer has breakage, carry out equating with phosphoric acid chamotte; At the bottom of charcoal, brick is progressively built laterally from middle part, the skinning loam of laying bricks adopts the supporting pug of zero thermal expansion brick, often build i.e. 6 bricks of 1050mm by laying bricks or stones, stay dilatation joint 3mm, in dilatation joint, put into filler, it is the trapezoidal plank of thick 3mm, build by laying bricks or stones require at the bottom of coking chamber smooth, brickwork joint mortar is full, forbid reverse faulting of slab ends, permissible error 1mm, in building process, often building one by laying bricks or stones need ride on adjacent silica brick and carry out planeness adjustment with the level bar of long 400mm, often builds six by laying bricks or stones and need carry out reverse faulting of slab ends inspection with the long chi of long 1000mm.
7. according to brick degree of depth method for maintaining at the bottom of the coke oven charcoal described in right 1, it is characterized in that, silica brick insulation in described step 6 burner position is specially with gap treatment technology, and machine, burner top, burnt both sides metope adopt arch top and plug-in ceramic fiber cloth door curtain made of cloth heat-insulation and heat-preservation; Gap at the bottom of stove frame and gap, burner position, charcoal between brick and stove frame nog plate adopts 817 silicon phosphate chamotte grouting, smears benefit, lower than brick at the bottom of charcoal, guarantees surface smoothing slightly.
8. according to brick degree of depth method for maintaining at the bottom of the coke oven charcoal described in right 1, it is characterized in that, at the bottom of the full row of described step 7 charcoal, brick buffer protection technology is specially; before coalingging; the thick plank of brick top lay one deck 45mm at the bottom of charcoal, plank at high temperature charing becomes charcoal, and charcoal is comparatively loose, lubricated.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104357067A (en) * | 2014-10-14 | 2015-02-18 | 辽宁中弘信冶金技术有限公司 | Coke oven maintenance method |
| CN111121464A (en) * | 2018-10-30 | 2020-05-08 | 新疆八一钢铁股份有限公司 | Method for repairing damaged partition wall of internal combustion type hot blast stove |
| CN117142475A (en) * | 2023-10-27 | 2023-12-01 | 内蒙古润阳悦达新能源科技有限公司 | Cleaning control method for furnace bottom silicon in industrial silicon smelting process |
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| CN102504837A (en) * | 2011-10-28 | 2012-06-20 | 马钢(集团)控股有限公司 | Synchronous cutting-off and unroofing repair method for coke side oven head of large-scale coke oven machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104357067A (en) * | 2014-10-14 | 2015-02-18 | 辽宁中弘信冶金技术有限公司 | Coke oven maintenance method |
| CN111121464A (en) * | 2018-10-30 | 2020-05-08 | 新疆八一钢铁股份有限公司 | Method for repairing damaged partition wall of internal combustion type hot blast stove |
| CN117142475A (en) * | 2023-10-27 | 2023-12-01 | 内蒙古润阳悦达新能源科技有限公司 | Cleaning control method for furnace bottom silicon in industrial silicon smelting process |
| CN117142475B (en) * | 2023-10-27 | 2024-02-13 | 内蒙古润阳悦达新能源科技有限公司 | Cleaning control method for furnace bottom silicon in industrial silicon smelting process |
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| CN104073269B (en) | 2016-09-14 |
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