Nkume Magnesia Chrome

A na-eji brik Magnesia chrome eme ihe na ụlọ ọrụ na ihe owuwu n’ihi na ha nwere oke mma dị ka nguzogide ọkụ na nguzogide nrụgide. Enwekwara ụdị brik dị iche iche nke magnesia chrome. Dabere na ihe ngwaahịa dị iche iche chọrọ, enwere ụdị brik atọ magnesia chrome. ụdị:

1. Bricks magnesia chrome: a na-eme brik chrome magnesia site na ezigbo ihe nke magnesia na chrome ore. A na -ahazi ọdịnaya nke Cr2O3 dịka mkpa dị iche iche si dị. Ngwaahịa nwere nkwụsi ike ọkụ dị mma yana arụmọrụ okpomọkụ dị elu. A na-eji ya eme ihe n’ọtụtụ ebe na ciment na igwe anaghị agba nchara. Ọkụ ọkụ na ihe ndị ọzọ.

2. Ngwakọta brik magnesia-chrome ozugbo: brik ndị magnesia-chrome jikọtara ọnụ na-eji chrome ore na-adịghị ọcha na magnesia dị elu dị elu dị ka akụrụngwa, mgbe ịkpụzi nnukwu nrụgide, na ịgbanye oke okpomọkụ na oke okpomọkụ karịa 1 700. . Ezi arụmọrụ okpomọkụ dị elu, nguzogide siri ike na mbibi slag. Ọ na -eguzogide ciment clinker. A na-ejikarị ya eme ihe na igwe anaghị agba nchara na igwe anaghị agba nchara.

3. Bricks recombined magnesia chrome brick na recombined magnesia chrome bricks: brik nke magnesia chrome na brik magnesia chrome, na-eji akụkụ ma ọ bụ ájá agwakọtara ọnụ (ájá agwakọtara agwakọta) dị ka akụrụngwa, ihe ndị dị mma, ịkpụzi nrụgide dị elu, Ultra -nke ọkụ ọkụ ọkụ dị elu, njikọta urughuru dị mma, ike ngwaahịa dị elu, nkwụsi ike dị mma, nke a na-ejikarị na RH, VOD, AOD na ngwaọrụ nnụcha mpụga ndị ọzọ, ite ọkụ igwe anaghị agba nchara, wdg.

4. Brik Magnesia chrome bụ ngwaahịa na -agbanwe agbanwe alkaline nwere 55% na 80% MgO na 8% ruo 20% Cr2O3, nke mejupụtara periclase, spinel ọtụtụ ihe mejupụtara na obere oge silicate. Ngwakọta spinel gụnyere MgAl2O4, MgFe2O4, MgCr2O4 na FeAl2O4 spinel solid solution.

Bricks Magnesia na -etolite ngwa ngwa mgbe afọ 1960 gasịrị n’ihi mmụba nke ịdị ọcha nke akụrụngwa na oke ọkụ. Ka ọ dị ugbu a, enwere ike kee brik magnesia chrome ka ọ bụrụ brik nkịtị, brik ndị ejikọtara ọnụ, brik ndị jikọtara ọnụ, blọk agbakọtachara na brik ndị ọzọ.

(1) Brick nkịtị chrome: Nke a bụ ngwaahịa ọdịnala, na -eji chrome ore dị ka irighiri irighiri na magnesia dị ka ntụ ntụ. Ma ọ bụ ihe abụọ ahụ nwere ahịrị nwere akara, yana ọkụ na -agbakarị bụ 1550 ~ 1600 ° C. Microstructure nke brik a na -egosi na enwere obere njikọta n’etiti irighiri ihe chromite na periclase, nke ka nke silicate (CMS) cimentation ma ọ bụ mwepu nkewa; enwere mpe mpe mpe mpe mpe mpe mpe mpe mpe, na enwechaghị kọntaktị kpọmkwem na matriks. Na nchikota, brik a nwere akụrụngwa na -adịghị mma yana nguzogide corrosion na -adịghị mma.

(2) brik magnesia-chrom na-ejikọ ọnụ: a na-emepụta brik magnesia-chrome na-adabere na brik nkịtị magnesia-chrome. Enwere njirimara mmepụta abụọ. Otu bụ iji akụrụngwa dị ọcha, nke ọzọ bụ iji mgbanye ọkụ dị elu. okpomọkụ. Ihe a na-akpọ njikọta pụtara na enwere njikọ chiri anya karịa ihe ndị dị na chrome ore na brik na periclase, n’ihi na akụrụngwa nwere obere SiO2 (nke a na-achịkwa n’okpuru 1% ruo 25%), yana ọnụọgụ silicate ewepụtara dị obere. . Usoro ịgba ọkụ na -amanye silicate n’ime akụkụ ahụ siri ike. Nke a na -eme ka njikọta nke ọma sie ike.

Bricks magnesia-chrome nwere njikọ chiri anya nwere njikọ chiri anya, ka brik ahụ wee nwee ike oke okpomọkụ dị elu, nguzogide slag, nguzogide corrosion, nguzogide mbuze, nguzogide corrosion, nkwụsi ike ikuku dị mma na nkwụsi ike na 1800 Celsius.

(3) Brick magnesia-chrome na-arụkọ ọrụ: A na-eji usoro nrụpụta ngwaahịa a ọkụ ọkụ na-agba ọkụ nke ngwakọta magnesia na chromium ore ntụ ntụ na nha ụfọdụ iji nweta ọgbọ nke spinel nke abụọ na magnesia-chrome ore mmeghachi omume siri ike maka ebumnuche nke ijikọ aka ọnụ iji kwadebe ihe sintered nkịtị, nke a na-eji emepụta ngwaahịa chụrụ n’ọrụ ma ọ bụ ngwaahịa kemịkal jikọtara ọnụ.

Njikọ ọnụ na ịdị n’otu nke microstructure nke bricks magnesia-chrome dị mma karịa nke brik ndị ejikọtara ọnụ. Ọnụ nke periclase desolubilization frasi na intergranular secondary spinel bụ karịa. Bricks nke magnesia-chrome nwere ọtụtụ ihe ndị ọzọ Ejikọtara ya na arụmọrụ nke brik dị mma, ọ kacha ama ama maka oke okpomoku dị elu, nguzogide ọkụ ngwa ngwa na nguzogide slag. A pụkwara ikewa brik ndị a na -agbakarị agbachasị n’ụdị abụọ, otu bụ brik a na -ahụkarị nke ọma, usoro niile nke ihe na -adịkarị nke irighiri ihe na ezigbo ntụ ntụ, ma a gbara ya ọkụ ma ọ bụ jikọtara ya na kemịkal, microstructure ya na -adịkarị; nke abụọ bụ ihe a na -ahụkarị maka brik na -agbacha agbacha, enwere akụkụ nke ihe eji eme ya, dị ka ihe na -agbazekarị maka irighiri ihe, na akụkụ ntụ ntụ dị mma nwere ike gwakọta ya na brik n’otu oke na ezigbo chrome ore na akwụkwọ magnesia ntụ ntụ. , nke mere na ngwaahịa ọkụ na ngwakọta kemịkalụ ga -abụ ihe na -adịghị ahụ anya Ọdịdị ahụ dị iche.

(4) Nchikota brik magnesia-chromium: igwe ọkụ na-agbaze magnesia-chromium na-agbaze, a na-agbazekwa agbaze ka ọ bụrụ microstructure dị mma, yana magnesia-chromium spinel na periclase kristal agwakọta dị ka isi ihe mejupụtara oge. A na-egwepịa ihe magnesia-chromium a gwakọtara ọnụ ka ọ bụrụ nha, agwakọta ma kpụzie ya, wee gbaa ya ọkụ iji kwadebe brik ndị ejikọtara ọnụ, ma ọ bụ jiri ya mee ihe dị ka brik ciment ciment.

A na -eji microstructure nke blọk jikọtara ọnụ nwee njikọta dị elu yana nnukwu akụkụ nke spinel desolvent phase: kristal ntọala nwere nnukwu usoro nke desolvent na -agbanwe agbanwe ahụ na kemịkal nke periclase, dị ka ibelata mgbasawanye ọkụ. ọnụọgụ. , Meziwanye nguzogide ujo dị elu, melite iguzogide mbibi acid-alkaline slag. Bricks jikọtara ọnụ nwere ụdị yiri nke nke brik a gwakọtara ọnụ, mana ha nwere nguzogide ka mma maka mgbanwe okpomọkụ ngwa ngwa yana microstructure edo edo karịa nke brik a gwakọtara agwakọta.

Ejikọtara ya na brik magnesia chrome, ọ bụ matriks mara mma nke nwere nkesa pore edo edo na microcracks, na mmetụta ya maka mgbanwe mberede na okpomọkụ dị mma karịa nke ịgbaze na nkedo. Arụmọrụ dị elu nke ngwaahịa a dị n’etiti brik a gwakọtara agwakọta na brik nke nwere njikọ.

(5) A na -agwakọta ma na -atụba brik chrome magnesia: Tinye ngwakọta nke magnesia na chrome ore n’ime ọkụ ọkụ eletrik ka ọ gbazee kpamkpam, wee wụsa agbaze ahụ ka ọ bụrụ akpụgharị na -emegharị ahụ. N’oge usoro nkwalite, a na -etolite usoro periclase kwụsiri ike na spinel kristal, a na -etolitekwa kristal mara mma n’otu oge, yabụ nkedo nkedo magnesia chrome nwere oke okpomọkụ dị elu yana nguzogide corrosion slag.

A na-ejikarị brik Magnesium chrome eme ihe na ụlọ ọrụ igwe, dị ka iwu ọkụ ọkụ na-emeghe ọkụ, elu ọkụ eletrik, ite ọkụ na-enwu enwu na ọkụ na-enwu enwu dị iche iche. Akụkụ dị elu nke mgbidi nke ọkụ ọkụ eletrik dị oke elu bụ nke a na-eji sọks magnesia-chrome kpuchie, mpaghara oke nzere nke ọkụ na-anụcha n’èzí ọkụ ahụ bụ ihe sịntetik, yana akwa Ebe a na-ere ọkụ nke ọkụ na-enwu enwu nke na-anaghị enwu ọkụ bụ brik ndị magnesia-chrome na ihe ndị sịntetik. Ejiri brik chrome mee magnesia. Tụkwasị na nke ahụ, a na-ejikwa brik magnesia-chrome na mpaghara ọkụ nke ciment rotary kilns na ndị na-emegharị ihe na-esi na iko.

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Nkume Magnesia Chrome

A na-eji brik Magnesia chrome eme ihe na ụlọ ọrụ na ihe owuwu n’ihi na ha nwere oke mma dị ka nguzogide ọkụ na nguzogide nrụgide. Enwekwara ụdị brik dị iche iche nke magnesia chrome. Dabere na ihe ngwaahịa dị iche iche chọrọ, enwere ụdị brik atọ magnesia chrome. ụdị:

1. Bricks magnesia chrome: a na-eme brik chrome magnesia site na ezigbo ihe nke magnesia na chrome ore. A na -ahazi ọdịnaya nke Cr2O3 dịka mkpa dị iche iche si dị. Ngwaahịa nwere nkwụsi ike ọkụ dị mma yana arụmọrụ okpomọkụ dị elu. A na-eji ya eme ihe n’ọtụtụ ebe na ciment na igwe anaghị agba nchara. Ọkụ ọkụ na ihe ndị ọzọ.

2. Ngwakọta brik magnesia-chrome ozugbo: brik ndị magnesia-chrome jikọtara ọnụ na-eji chrome ore na-adịghị ọcha na magnesia dị elu dị elu dị ka akụrụngwa, mgbe ịkpụzi nnukwu nrụgide, na ịgbanye oke okpomọkụ na oke okpomọkụ karịa 1 700. . Ezi arụmọrụ okpomọkụ dị elu, nguzogide siri ike na mbibi slag. Ọ na -eguzogide ciment clinker. A na-ejikarị ya eme ihe na igwe anaghị agba nchara na igwe anaghị agba nchara.

3. Bricks recombined magnesia chrome brick na recombined magnesia chrome bricks: brik nke magnesia chrome na brik magnesia chrome, na-eji akụkụ ma ọ bụ ájá agwakọtara ọnụ (ájá agwakọtara agwakọta) dị ka akụrụngwa, ihe ndị dị mma, ịkpụzi nrụgide dị elu, Ultra -nke ọkụ ọkụ ọkụ dị elu, njikọta urughuru dị mma, ike ngwaahịa dị elu, nkwụsi ike dị mma, nke a na-ejikarị na RH, VOD, AOD na ngwaọrụ nnụcha mpụga ndị ọzọ, ite ọkụ igwe anaghị agba nchara, wdg.

4. Brik Magnesia chrome bụ ngwaahịa na -agbanwe agbanwe alkaline nwere 55% na 80% MgO na 8% ruo 20% Cr2O3, nke mejupụtara periclase, spinel ọtụtụ ihe mejupụtara na obere oge silicate. Ngwakọta spinel gụnyere MgAl2O4, MgFe2O4, MgCr2O4 na FeAl2O4 spinel solid solution.

Bricks Magnesia na -etolite ngwa ngwa mgbe afọ 1960 gasịrị n’ihi mmụba nke ịdị ọcha nke akụrụngwa na oke ọkụ. Ka ọ dị ugbu a, enwere ike kee brik magnesia chrome ka ọ bụrụ brik nkịtị, brik ndị ejikọtara ọnụ, brik ndị jikọtara ọnụ, blọk agbakọtachara na brik ndị ọzọ.

(1) Brick nkịtị chrome: Nke a bụ ngwaahịa ọdịnala, na -eji chrome ore dị ka irighiri irighiri na magnesia dị ka ntụ ntụ. Ma ọ bụ ihe abụọ ahụ nwere ahịrị nwere akara, yana ọkụ na -agbakarị bụ 1550 ~ 1600 ° C. Microstructure nke brik a na -egosi na enwere obere njikọta n’etiti irighiri ihe chromite na periclase, nke ka nke silicate (CMS) cimentation ma ọ bụ mwepu nkewa; enwere mpe mpe mpe mpe mpe mpe mpe mpe mpe, na enwechaghị kọntaktị kpọmkwem na matriks. Na nchikota, brik a nwere akụrụngwa na -adịghị mma yana nguzogide corrosion na -adịghị mma.

(2) brik magnesia-chrom na-ejikọ ọnụ: a na-emepụta brik magnesia-chrome na-adabere na brik nkịtị magnesia-chrome. Enwere njirimara mmepụta abụọ. Otu bụ iji akụrụngwa dị ọcha, nke ọzọ bụ iji mgbanye ọkụ dị elu. okpomọkụ. Ihe a na-akpọ njikọta pụtara na enwere njikọ chiri anya karịa ihe ndị dị na chrome ore na brik na periclase, n’ihi na akụrụngwa nwere obere SiO2 (nke a na-achịkwa n’okpuru 1% ruo 25%), yana ọnụọgụ silicate ewepụtara dị obere. . Usoro ịgba ọkụ na -amanye silicate n’ime akụkụ ahụ siri ike. Nke a na -eme ka njikọta nke ọma sie ike.

Bricks magnesia-chrome nwere njikọ chiri anya nwere njikọ chiri anya, ka brik ahụ wee nwee ike oke okpomọkụ dị elu, nguzogide slag, nguzogide corrosion, nguzogide mbuze, nguzogide corrosion, nkwụsi ike ikuku dị mma na nkwụsi ike na 1800 Celsius.

(3) Brick magnesia-chrome na-arụkọ ọrụ: A na-eji usoro nrụpụta ngwaahịa a ọkụ ọkụ na-agba ọkụ nke ngwakọta magnesia na chromium ore ntụ ntụ na nha ụfọdụ iji nweta ọgbọ nke spinel nke abụọ na magnesia-chrome ore mmeghachi omume siri ike maka ebumnuche nke ijikọ aka ọnụ iji kwadebe ihe sintered nkịtị, nke a na-eji emepụta ngwaahịa chụrụ n’ọrụ ma ọ bụ ngwaahịa kemịkal jikọtara ọnụ.

Njikọ ọnụ na ịdị n’otu nke microstructure nke bricks magnesia-chrome dị mma karịa nke brik ndị ejikọtara ọnụ. Ọnụ nke periclase desolubilization frasi na intergranular secondary spinel bụ karịa. Bricks nke magnesia-chrome nwere ọtụtụ ihe ndị ọzọ Ejikọtara ya na arụmọrụ nke brik dị mma, ọ kacha ama ama maka oke okpomoku dị elu, nguzogide ọkụ ngwa ngwa na nguzogide slag. A pụkwara ikewa brik ndị a na -agbakarị agbachasị n’ụdị abụọ, otu bụ brik a na -ahụkarị nke ọma, usoro niile nke ihe na -adịkarị nke irighiri ihe na ezigbo ntụ ntụ, ma a gbara ya ọkụ ma ọ bụ jikọtara ya na kemịkal, microstructure ya na -adịkarị; nke abụọ bụ ihe a na -ahụkarị maka brik na -agbacha agbacha, enwere akụkụ nke ihe eji eme ya, dị ka ihe na -agbazekarị maka irighiri ihe, na akụkụ ntụ ntụ dị mma nwere ike gwakọta ya na brik n’otu oke na ezigbo chrome ore na akwụkwọ magnesia ntụ ntụ. , nke mere na ngwaahịa ọkụ na ngwakọta kemịkalụ ga -abụ ihe na -adịghị ahụ anya Ọdịdị ahụ dị iche.

(4) Nchikota brik magnesia-chromium: igwe ọkụ na-agbaze magnesia-chromium na-agbaze, a na-agbazekwa agbaze ka ọ bụrụ microstructure dị mma, yana magnesia-chromium spinel na periclase kristal agwakọta dị ka isi ihe mejupụtara oge. A na-egwepịa ihe magnesia-chromium a gwakọtara ọnụ ka ọ bụrụ nha, agwakọta ma kpụzie ya, wee gbaa ya ọkụ iji kwadebe brik ndị ejikọtara ọnụ, ma ọ bụ jiri ya mee ihe dị ka brik ciment ciment.

A na -eji microstructure nke blọk jikọtara ọnụ nwee njikọta dị elu yana nnukwu akụkụ nke spinel desolvent phase: kristal ntọala nwere nnukwu usoro nke desolvent na -agbanwe agbanwe ahụ na kemịkal nke periclase, dị ka ibelata mgbasawanye ọkụ. ọnụọgụ. , Meziwanye nguzogide ujo dị elu, melite iguzogide mbibi acid-alkaline slag. Bricks jikọtara ọnụ nwere ụdị yiri nke nke brik a gwakọtara ọnụ, mana ha nwere nguzogide ka mma maka mgbanwe okpomọkụ ngwa ngwa yana microstructure edo edo karịa nke brik a gwakọtara agwakọta.

Ejikọtara ya na brik magnesia chrome, ọ bụ matriks mara mma nke nwere nkesa pore edo edo na microcracks, na mmetụta ya maka mgbanwe mberede na okpomọkụ dị mma karịa nke ịgbaze na nkedo. Arụmọrụ dị elu nke ngwaahịa a dị n’etiti brik a gwakọtara agwakọta na brik nke nwere njikọ.

(5) A na -agwakọta ma na -atụba brik chrome magnesia: Tinye ngwakọta nke magnesia na chrome ore n’ime ọkụ ọkụ eletrik ka ọ gbazee kpamkpam, wee wụsa agbaze ahụ ka ọ bụrụ akpụgharị na -emegharị ahụ. N’oge usoro nkwalite, a na -etolite usoro periclase kwụsiri ike na spinel kristal, a na -etolitekwa kristal mara mma n’otu oge, yabụ nkedo nkedo magnesia chrome nwere oke okpomọkụ dị elu yana nguzogide corrosion slag.

A na-ejikarị brik Magnesium chrome eme ihe na ụlọ ọrụ igwe, dị ka iwu ọkụ ọkụ na-emeghe ọkụ, elu ọkụ eletrik, ite ọkụ na-enwu enwu na ọkụ na-enwu enwu dị iche iche. Akụkụ dị elu nke mgbidi nke ọkụ ọkụ eletrik dị oke elu bụ nke a na-eji sọks magnesia-chrome kpuchie, mpaghara oke nzere nke ọkụ na-anụcha n’èzí ọkụ ahụ bụ ihe sịntetik, yana akwa Ebe a na-ere ọkụ nke ọkụ na-enwu enwu nke na-anaghị enwu ọkụ bụ brik ndị magnesia-chrome na ihe ndị sịntetik. Ejiri brik chrome mee magnesia. Tụkwasị na nke ahụ, a na-ejikwa brik magnesia-chrome na mpaghara ọkụ nke ciment rotary kilns na ndị na-emegharị ihe na-esi na iko.

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