CN108530038A - A kind of anode furnace furnace bottom shield lining composition - Google Patents
A kind of anode furnace furnace bottom shield lining composition Download PDFInfo
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- CN108530038A CN108530038A CN201810583795.1A CN201810583795A CN108530038A CN 108530038 A CN108530038 A CN 108530038A CN 201810583795 A CN201810583795 A CN 201810583795A CN 108530038 A CN108530038 A CN 108530038A
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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
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
- C04B35/047—Refractories from grain sized mixtures containing chromium oxide or chrome ore
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite
- C04B2235/445—Fluoride containing anions, e.g. fluosilicate
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
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- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a kind of anode furnace furnace bottoms to protect lining composition, it is made of the raw material of following mass percentages：Magnesium chromium aggregate：55~65%, magnesia powder：25~35%, waterglass：12~18%, prodan：The 8~12% of waterglass dosage；When use, after the completion of waiting for anode furnace furnace bottom brick masonry, according to the ratio by each raw material weighing it is good after be uniformly mixed, it is applied to anode furnace bottom brick surface, detection coating layer thickness reaches 20~30mm, and thickness is qualified, stand natural curing three days, shield lining is formed i.e. on anode furnace bottom brick, then presses normal procedure baker 7~8 days, you can blow-on uses；Inventive formulation is simple; it is easy for construction; the shield thickness of the liner degree of formation is thin; thermal conductivity is strong; hot slippages are few; anode furnace bottom brick can be protected to continue to expand in blowing-in operation, dilatation joint is closed before the loss completely of furnace bottom shield lining, effectively avoid occurring because dilatation joint oozes the accident that copper causes bottom brick to damage during anode furnace blow-on.
Description
Technical field
The present invention relates to anode furnace maintenance technology field, specifically a kind of anode furnace furnace bottom shield lining composition.
Background technology
Dilatation joint need to be set when fixed anode furnace masonry heater bottom, and specific practice is：Every 3~4 pieces of bricks stay set it is one wide by 2
The dilatation joint of~3mm is filled with cardboard in seam.The effect of dilatation joint is to compensate the expansion occurred after bottom brick is heated, avoids furnace bottom
Deformation, furnace body deformation even squeeze off bottom brick.Baker after the completion of anode furnace is built by laying bricks or stones, 7~8 days used times, gradually from room temperature by burner hearth
1300 DEG C are increased to, starts to produce after the completion of baker.The purpose of baker is by stepping up bottom brick temperature, bottom brick being made to fill
Divide expansion, is closed dilatation joint.
Practice finds that furnace bottom dilatation joint only has small part closure after baker, most of not closed.Usual blowing-in operation
1 month or so, furnace bottom dilatation joint could be all closed.It means that 1st month of production, furnace bottom is when contacting copper liquid, expansion
It is seamed into the channel that furnace bottom is penetrated into for copper liquid, dilatation joint oozes copper and generates prodigious negative effect to anode furnace furnace bottom：
1. dilatation joint squeezes bottom brick after oozing copper condensation
Anode furnace is interruption production model, and charging is followed successively by per heat（Solid-state copper raw material is added）, fusing（Copper raw material is fused into copper
Liquid）, refinement oxide, reduction refining, the casting operation stage.Most of the time per heat, the furnace bottom top accumulation 600 of anode furnace
The copper liquid of~950mm depth, copper liquid have prodigious static pressure than great；Copper liquid temperature is up to 1200 DEG C, and mobility is fine.Cause
This, copper liquid temperature, pressure collective effect under, copper liquid penetrate into furnace bottom dilatation joint, cause the side of bottom brick also by copper liquid
Package.
After casting operation per heat, the copper liquid in the dilatation joint of bottom brick can left behind, bottom brick surface
A small amount of copper liquid can be remained.And then the production of next heat starts after the casting operation of a upper heat, be added often into anode furnace
Warm copper raw material, furnace bottom heat is absorbed by copper raw material during charging, and bottom temperature drops sharply to 900 DEG C from 1200 DEG C.Furnace bottom
The copper liquid quick solidification of remaining copper liquid and bottom brick remained on surface in dilatation joint, volume contraction, formation are wrapped in bottom brick table
The inverted U-shaped cold copper in face, the cold copper that copper liquid is formed at dilatation joint equally squeeze bottom brick from two profile pliers of bottom brick.And
No matter bottom brick material is magnesite-chrome brick or magnesia brick, flexural strength often its insufficient compressive resistance 1/4.The extrusion process is held always
Continue the melting stage, in dilatation joint until the fusing of condensation copper.
The charging sessions of each heat, penetrating into the copper liquid of furnace bottom dilatation joint can all solidify and squeeze bottom brick.It is each
The total operation time of heat is between 16~30 hours, it is meant that bottom brick is frequently squeezed, and bottom brick is greatly accelerated
Loss rate shortens the overhaul life of anode furnace（After bottom brick loss 1/3, anode furnace must overhaul）.When furnace bottom dilatation joint
When wider, if penetrating into the copper liquid quick refrigeration solidification of furnace bottom dilatation joint, or even bottom brick can be squeezed off.
2. dilatation joint, which oozes copper, leads to bottom brick lot accident
The first month of anode furnace blowing-in operation, if containing more dystectic impurity component in copper raw material（It is most common
It is ferroso-ferric oxide）, which enters dilatation joint with copper liquid, generates that density is big, compact structure, chemical property are stable, high-melting-point
Stove knot.There are when stove knot, dilatation joint can not be closed, and copper liquid continues expanded seam and penetrates into below furnace bottom, be corroded, infiltration even takes
For the ramming bed of material below bottom brick, a copper liquid layer is finally formed below bottom brick.It, can be upward since the buoyancy of copper liquid is big
Bottom brick is held up, is commonly called as " drawing lots ".The bottom brick drawn lots protrudes from furnace bottom surface, and the copper raw material that will soon be added into is pounded
Damage, copper liquid pour in, destroy furnace bottom rapidly, force anode furnace overhaul from there.1 in blowing-in operation of domestic more copper enterprise
Bottom brick lot accident occurs in month.
Obviously, the negative effect that avoid anode furnace blow-on initial stage furnace bottom dilatation joint not closed and generate, should extend baker
Time is closed until whole dilatation joints.According to practice, furnace drying time needs extend to no less than 1 month, however, furnace drying time is prolonged
It is long, the consumption of fuel is substantially increased, is difficult to bear in entreprise cost.Therefore, current anode furnace furnace bottom needs how to be solved
Furnace drying time is long, and production cost is high, and shortening furnace drying time can cause furnace bottom brickwork joint to penetrate into copper liquid, squeeze bottom brick, aggravation
The problem of bottom brick loss even squeezes off bottom brick, bottom brick is caused to be drawn lots, becomes urgent problem to be solved in current industry.
Invention content
The purpose of the present invention cannot be closed in a short time aiming at current anode furnace mill initial stage furnace bottom dilatation joint, sun
Pole stove furnace bottom is easy to happen dilatation joint and oozes copper, causes anode furnace bottom brick to be extruded damage or the generation of bottom brick lot accident, greatly
The problem of big overhaul life for shortening anode furnace, raising enterprise's production cost, and a kind of anode furnace furnace bottom shield lining composition is provided.
A kind of anode furnace furnace bottom shield lining composition of the present invention, is made of the raw material of following mass percentages：Magnesium chromium
Aggregate：55~65%, magnesia powder：25~35%, waterglass：12~18%, prodan：The 8~12% of waterglass dosage；It is above-mentioned
The sum of four kinds of raw materials are 100%.
A kind of anode furnace furnace bottom shield lining composition of the present invention, optimization formula is by the raw material of following mass percentages
Composition：Magnesium chromium aggregate：56~60%, magnesia powder：26~30%, waterglass：12~16%, prodan：The 8 of waterglass dosage
~12%；The sum of above-mentioned four kinds of raw materials are 100%.
A kind of anode furnace furnace bottom shield lining composition of the present invention, most preferably formula is by the original of following mass percentages
Material composition：Magnesium chromium bone meal：58%, magnesia powder：28%, waterglass：12.5%, prodan：The 12% of waterglass dosage.
Preferably, the magnesium chromium aggregate is to be crushed to grain size by magnesite-chrome brick to be made less than 10mm, the granular-grade of magnesium chromium aggregate
With for：5~10mm grain size magnesium chromium aggregates account for 50~60%, and 5mm or less grain size magnesium chromium aggregates account for 40~50%.It is produced into save
This, may be used being crushed with rear magnesite-chrome brick to prepare magnesium chromium aggregate for recycling, use new brick effect more preferable certainly.
Preferably, the magnesia powder is to use magnesite clinker, wherein content of magnesia >=90%, grain size ＜ 1mm, wherein
＜ 0.09mm grain size >=85%.
Preferably, the waterglass is to use metallurgical furnace and kilm, modulus 2.3~3.0, dioxide-containing silica >=25%.
Preferably, the prodan is using industrial prodan, wherein prodan content >=97%.
Furnace bottom shield lining composition of the present invention is that will protect lining group after the completion of waiting for anode furnace furnace bottom brick masonry when in use
Close object each raw material weighs according to the ratio it is good after, be uniformly mixed, be applied to anode furnace bottom brick surface, after the completion of smearing, examine
It surveys coating layer thickness and reaches 20~30mm, thickness is qualified, stands natural curing three days, i.e., forms bottom brick on anode furnace bottom brick
Shield lining, then press normal procedure baker 7~8 days, you can carry out blow-on use.
The anode furnace bottom brick shield lining composition of the present invention, is using magnesium chromium aggregate, magnesia powder as main component, with water glass
Glass is bonding agent, and prodan is coagulant composition, in use, by mentioned component mixing according to the ratio, is applied to bottom brick table
After face stands natural curing three days, you can form one layer of shield lining on bottom brick surface（Refractory protection）, the shield lining can bear
1200 DEG C of copper water high temperature impact 2~3 months（Impermanent shield lining）, can play the role of separating copper liquid and bottom brick, make copper liquid
Dilatation joint can not be penetrated into, waits for that anode furnace bottom brick expands completely, the dilatation joint between bottom brick is closed completely（One month or so）
It is just gradually consumed later, can effectively extend anode furnace bottom brick service life, avoid the frequent overhaul of anode furnace, economic benefit aobvious
It writes.
Selected magnesium chromium aggregate in the present invention, with anode furnace bottom brick（Magnesite-chrome brick）Ingredient is consistent, in anode furnace blow-on
After gradually being consumed in refining process, due to autologous density very little, become dross and swim in copper liquid upper surface, makees with clinker skimming
It is cleaned, will not have any impact to copper liquid quality when industry；
Selected magnesia powder, granularity very little in the present invention can be good at filling the gap between magnesium chromium particles of aggregates, with
Magnesium chromium aggregate, waterglass etc. form one layer of fine and close protective layer together, after being gradually consumed in anode furnace blow-on refining process,
Also due to autologous density very little, can swim in copper liquid upper surface as dross, be cleaned when with clinker skimming operation；
Selected waterglass in the present invention, main component is silica, as the bonding agent in the present invention, to magnesium chromium
Aggregate and magnesia have good combination, and silica network skeleton is formed after hardening.And silica composition
It is common slag former in copper refining process, can be reacted from a small amount of silica of shield lining stripping with the impurity in copper raw material, it is raw
Copper liquid upper surface is swum at the lighter dross of proportion, is cleaned when with clinker skimming operation；
Selected prodan, uses as coagulant in the present invention in the present invention, and it is in use consumption process
It is to form dross as waterglass to be eventually removed.
The anode furnace furnace bottom shield lining construction is simple of the present invention, only needs natural curing, without heating just hardenable, curing time
It is short.Anode furnace can intersect progress with other processes when building by laying bricks or stones, when maintenance can normally build furnace wall by laying bricks or stones, therefore increase working hour less than 1 day.
Furnace bottom shield thickness of the liner degree is thin made of the furnace bottom shield lining composition of the present invention, and contained magnesium chromium component thermal conductivity is strong, heat transfer process
Loss is seldom, and the heat transfer in anode furnace molten bath to bottom brick is made it continue without hindrance in blowing-in operation swollen by shield lining
It is swollen, it is closed dilatation joint before the loss completely of furnace bottom shield lining.
Inventive formulation is simple, easy construction, and manufactured anode furnace furnace bottom shield lining can effectively slow down machine of the copper liquid to furnace bottom
Tool impacts, and copper liquid, clinker is prevented to penetrate into the dilatation joint of bottom brick, avoids clinker and is rushed to the physical dissolution of bottom brick and machinery
Brush has prevented dilatation joint and has oozed the generation for squeezing off bottom brick and bottom brick lot accident after copper condenses, extended bottom brick and use the longevity
Life and anode furnace overhaul life, remarkable in economical benefits.
Description of the drawings
Fig. 1 is structural schematic diagram of the furnace bottom shield lining composition brushing in anode furnace bottom brick upper surface of the present invention.
In figure, 1-anode furnace, 2-bottom bricks, 3-shield linings, 4-copper liquids, 5-dilatation joints.
Specific implementation mode
Embodiment 1
A kind of anode furnace furnace bottom shield lining composition of the present embodiment, is made of the raw material of following mass percentages：Magnesium chromium bone
Powder：58%, magnesia powder：28%, waterglass：12.5%, prodan：1.5%.
The aggregate of magnesium chromium described in the present embodiment is to be crushed to grain size by magnesite-chrome brick to be made less than 10mm, the particle of magnesium chromium aggregate
Grading is：5~10mm grain size magnesium chromium aggregates account for 55%, and 5mm or less grain size magnesium chromium aggregates account for 45%.To save production cost, this reality
Apply in example is to prepare magnesium chromium aggregate with rear magnesite-chrome brick using recycling.
Magnesia powder described in the present embodiment is to use magnesite clinker, wherein content of magnesia >=90%, grain size ＜ 1mm,
Middle ＜ 0.09mm grain size >=85%.
Waterglass described in the present embodiment is to use metallurgical furnace and kilm, modulus 2.3~3.0, dioxide-containing silica >=
25%。
Prodan described in the present embodiment is using industrial prodan, wherein prodan content >=97%.
Referring to Fig. 1, the anode furnace furnace bottom shield lining composition of the present embodiment is to wait for that 1 bottom brick 2 of anode furnace is built by laying bricks or stones when in use
After the completion, it after each raw material of shield lining composition being weighed well according to the ratio, is uniformly mixed, is applied on anode furnace bottom brick 2
Surface, after the completion of smearing, detection coating layer thickness reaches 30mm, and thickness is qualified, stands natural curing three days, i.e., in anode furnace furnace bottom
Bottom brick shield lining 3 is formed on brick, then presses normal procedure baker 8 days, you can carries out blow-on use.Bottom brick made from the present embodiment
Shield lining can bear 1200 DEG C of copper water high temperature impact 3 months, can play the role of separating copper liquid 4 and bottom brick 2, make copper liquid without
Method penetrates into dilatation joint 5, waits for that anode furnace bottom brick 2 expands completely, the dilatation joint 5 between bottom brick 2 normally produced it by 35 days
After be closed completely, then just completely consumed after normal production in 50 days, bottom brick 2 is just formally contacted with copper liquid.In shield lining combination
During object protection, anode furnace bottom brick does not expand that seam oozes copper, anode furnace bottom brick is squeezed off or bottom brick lot thing
Therefore.
Embodiment 2
A kind of anode furnace furnace bottom shield lining composition of the present embodiment, is made of the raw material of following mass percentages：Magnesium chromium bone
Material：56%, magnesia powder：30%, waterglass：13%, prodan：1%.
The aggregate of magnesium chromium described in the present embodiment is to be crushed to grain size by magnesite-chrome brick to be made less than 10mm, the particle of magnesium chromium aggregate
Grading is：5~10mm grain size magnesium chromium aggregates account for 50%, and 5mm or less grain size magnesium chromium aggregates account for 50%.New magnesium chromium is used in the present embodiment
Magnesium chromium aggregate prepared by brick, through actual production, aggregate difference unobvious made of the rear magnesite-chrome brick of use with recycling.
Magnesia powder described in the present embodiment is to use magnesite clinker, wherein content of magnesia >=90%, grain size ＜ 1mm,
Middle ＜ 0.09mm grain size >=85%.
Waterglass described in the present embodiment is to use metallurgical furnace and kilm, modulus 2.3~3.0, dioxide-containing silica >=
25%。
Prodan described in the present embodiment is using industrial prodan, wherein prodan content >=97%.
The shield lining composition of the present embodiment is brushed after making in anode furnace bottom brick upper surface 20mm thickness, through natural curing
Bottom brick shield lining is formed within 3 days, blowing-in operation, bottom brick dilatation joint close baker completely after normal production in 30 days later within 7 days
It closes, furnace bottom shield lining completely consumes after maintaining 2 months.During shield lining composition protection, anode furnace bottom brick does not occur
Dilatation joint oozes copper, anode furnace bottom brick is squeezed off or bottom brick lot accident.
Furnace bottom shield lining composition using the present invention, can effectively prevent anode it can be seen from embodiment 1 and embodiment 2
During stove blowing-in operation dilatation joint ooze anode furnace bottom brick caused by copper squeezed off, bottom brick lot accident occur.Illustrate this
The shield lining composition of invention has high practical value, has greatly meaning to the production cost and maintenance cost that reduce anode furnace
Justice, remarkable in economical benefits.
Embodiment 3
A kind of anode furnace furnace bottom shield lining composition of the present embodiment, is made of the raw material of following mass percentages：Magnesium chromium bone
Material：58.5%, magnesia powder：26%, waterglass：14%, prodan：1.5%；The sum of above-mentioned four kinds of raw materials are 100%.
The aggregate of magnesium chromium described in the present embodiment is to be crushed to grain size by magnesite-chrome brick to be made less than 10mm, the particle of magnesium chromium aggregate
Grading is：5~10mm grain size magnesium chromium aggregates account for 60%, and 5mm or less grain size magnesium chromium aggregates account for 40%.To save production cost, this reality
It applies in example and magnesium chromium aggregate is prepared using being crushed with rear magnesite-chrome brick for recycling.
Magnesia powder described in the present embodiment is to use magnesite clinker, wherein content of magnesia >=90%, grain size ＜ 1mm,
Middle ＜ 0.09mm grain size >=85%.
Waterglass described in the present embodiment is to use metallurgical furnace and kilm, modulus 2.3~3.0, dioxide-containing silica >=
25%。
Prodan described in the present embodiment is using industrial prodan, wherein prodan content >=97%.
Embodiment 4
A kind of anode furnace furnace bottom shield lining composition of the present embodiment, is made of the raw material of following mass percentages：Magnesium chromium bone
Material：52%, magnesia powder：35%, waterglass：12%, prodan：1%.
The aggregate of magnesium chromium described in the present embodiment is to be crushed to grain size by magnesite-chrome brick to be made less than 10mm, the particle of magnesium chromium aggregate
Grading is：5~10mm grain size magnesium chromium aggregates account for 53%, and 5mm or less grain size magnesium chromium aggregates account for 47%.To save production cost, this reality
It applies in example and magnesium chromium aggregate is prepared using being crushed with rear magnesite-chrome brick for recycling.
Magnesia powder described in the present embodiment is to use magnesite clinker, wherein content of magnesia >=90%, grain size ＜ 1mm,
Middle 0.09mm grain size >=85%.
Waterglass described in the present embodiment is to use metallurgical furnace and kilm, modulus 2.3~3.0, dioxide-containing silica >=
25%。
Prodan described in the present embodiment is using industrial prodan, wherein prodan content >=97%.
Embodiment 5
A kind of anode furnace furnace bottom shield lining composition of the present embodiment, is made of the raw material of following mass percentages：Magnesium chromium bone
Material：55%, magnesia powder：25%, waterglass：18%, prodan：2%.
The aggregate of magnesium chromium described in the present embodiment is to be crushed to grain size by magnesite-chrome brick to be made less than 10mm, the particle of magnesium chromium aggregate
Grading is：5~10mm grain size magnesium chromium aggregates account for 57%, and 5mm or less grain size magnesium chromium aggregates account for 43%.To save production cost, this reality
It applies in example and magnesium chromium aggregate is prepared using being crushed with rear magnesite-chrome brick for recycling.
Magnesia powder described in the present embodiment is to use magnesite clinker, wherein content of magnesia >=90%, grain size ＜ 1mm,
Middle ＜ 0.09mm grain size >=85%.
Waterglass described in the present embodiment is to use metallurgical furnace and kilm, modulus 2.3~3.0, dioxide-containing silica >=
25%。
Prodan described in the present embodiment is using industrial prodan, wherein prodan content >=97%.
Embodiment 6
A kind of anode furnace furnace bottom shield lining composition of the present embodiment, is made of the raw material of following mass percentages：Magnesium chromium bone
Material：62%, magnesia powder：25%, waterglass：12%, prodan：1%.
The aggregate of magnesium chromium described in the present embodiment is to be crushed to grain size by magnesite-chrome brick to be made less than 10mm, the particle of magnesium chromium aggregate
Grading is：5~10mm grain size magnesium chromium aggregates account for 52%, and 5mm or less grain size magnesium chromium aggregates account for 48%.To save production cost, this reality
It applies in example and magnesium chromium aggregate is prepared using being crushed with rear magnesite-chrome brick for recycling.
Magnesia powder described in the present embodiment is to use magnesite clinker, wherein content of magnesia >=90%, grain size ＜ 1mm,
Middle ＜ 0.09mm grain size >=85%.
Waterglass described in the present embodiment is to use metallurgical furnace and kilm, modulus 2.3~3.0, dioxide-containing silica >=
25%。
Prodan described in the present embodiment is using industrial prodan, wherein prodan content >=97%.
Claims (8)
1. a kind of anode furnace furnace bottom shield lining composition, it is characterised in that be made of the raw material of following mass percentages：Magnesium chromium
Aggregate：55~65%, magnesia powder：25~35%, waterglass：12~18%, prodan：The 8~12% of waterglass dosage；It is above-mentioned
The sum of four kinds of raw materials are 100%.
2. a kind of anode furnace furnace bottom shield lining composition according to claim 1, it is characterised in that be by following quality percentages
The raw material of content forms：Magnesium chromium aggregate：56~60%, magnesia powder：26~30%, waterglass：12~16%, prodan：Water glass
The 8~12% of glass dosage；The sum of above-mentioned four kinds of raw materials are 100%.
3. a kind of anode furnace furnace bottom shield lining composition according to claim 1 or 2 or 3, it is characterised in that be by following matter
Measure the raw material composition of percentage composition：Magnesium chromium bone meal：58%, magnesia powder：28%, waterglass：12.5%, prodan：Waterglass is used
The 12% of amount.
4. a kind of anode furnace furnace bottom shield lining composition according to claim 1 or 2 or 3, it is characterised in that：The magnesium chromium bone
Material is to be crushed to grain size by magnesite-chrome brick to be made less than 10mm, and the grain composition of magnesium chromium aggregate is：5~10mm grain size magnesium chromium aggregates account for
50~60%, 5mm or less grain size magnesium chromium aggregate account for 40~50%.
5. a kind of anode furnace furnace bottom shield lining composition according to claim 1 or 2 or 3, it is characterised in that：The magnesia
Powder is to use magnesite clinker, wherein content of magnesia >=90%, grain size ＜ 1mm, wherein ＜ 0.09mm grain size >=85%.
6. a kind of anode furnace furnace bottom shield lining composition according to claim 1 or 2 or 3, it is characterised in that：The waterglass
It is to use metallurgical furnace and kilm, modulus 2.3~3.0, dioxide-containing silica >=25%.
7. a kind of anode furnace furnace bottom shield lining composition according to claim 1 or 2 or 3, it is characterised in that：The fluosilicic acid
Sodium is using industrial prodan, wherein prodan content >=97%.
8. a kind of anode furnace furnace bottom shield lining composition according to claim 1 or 2 or 3, it is characterised in that：The furnace bottom shield
It serves as a contrast composition when in use, is to weigh each raw material of shield lining composition according to the ratio after the completion of waiting for anode furnace furnace bottom brick masonry
Afterwards, it is uniformly mixed, is applied to anode furnace bottom brick surface, after the completion of smearing, detection coating layer thickness reaches 20~30mm, thick
Degree is qualified, stands natural curing three days, i.e., bottom brick shield lining is formed on anode furnace bottom brick, then press normal procedure baker 7~8
It, you can carry out blow-on use.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114196244A (en) * | 2021-12-30 | 2022-03-18 | 浙江正恒纳米科技股份有限公司 | Preparation method of sleeper flame-retardant high-temperature-resistant coating |
| CN115403395A (en) * | 2022-09-01 | 2022-11-29 | 中铜东南铜业有限公司 | Resource utilization method of copper smelting waste magnesia-chrome bricks |
Citations (13)
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| CN114196244A (en) * | 2021-12-30 | 2022-03-18 | 浙江正恒纳米科技股份有限公司 | Preparation method of sleeper flame-retardant high-temperature-resistant coating |
| CN115403395A (en) * | 2022-09-01 | 2022-11-29 | 中铜东南铜业有限公司 | Resource utilization method of copper smelting waste magnesia-chrome bricks |
| CN115403395B (en) * | 2022-09-01 | 2023-12-01 | 中铜东南铜业有限公司 | Resource utilization method of copper smelting waste magnesium-chromium bricks |
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