Nūhou

?Piliki Magnesia-chromehe mea refractory maʻamau me ka magnesium oxide (MgO) a me ka chromium trioxide (Cr2O3) ma ke ʻano nui. Loaʻa iā ia nā waiwai maikaʻi e like me ke kiʻekiʻe refractoriness, thermal shock resistance, slag resistance and erosion resistance. ʻO kāna mau mea mineral nui he periclase a me spinel. ʻO kēia mau hiʻohiʻona e hana maikaʻi nā pōhaku magnesia-chrome i nā wahi wela kiʻekiʻe a kūpono i nā mea hana ʻenehana kiʻekiʻe. ?

ʻO nā mea hana a me ke kaʻina hana?

ʻO nā mea waiwai nui o nā pōhaku lepo magnesia-chrome ʻo ia ka magnesia a me ka chromite. Loaʻa i ka Magnesia kahi koi maʻemaʻe kiʻekiʻe, ʻoiai ʻo ka haku mele ʻana o ka chromite ka mea maʻamau Cr2O3 ma waena o 30% a me 45%, a ʻaʻole ʻoi aku ka CaO ma mua o 1.0% a 1.5%. ʻO ke kaʻina hana e pili ana i ke ʻano hoʻopili pololei a me ke ʻano kī ʻole. Hoʻohana ʻia nā pōhaku lepo magnesia-chrome hoʻopaʻa pololei i nā mea maka maʻemaʻe kiʻekiʻe a puhi ʻia i ka wela kiʻekiʻe e hana i kahi pae wela kiʻekiʻe e hoʻopaʻa pololei ʻia o periclase a me spinel, kahi e hoʻomaikaʻi nui ai i ka ikaika kiʻekiʻe a me ka pale pale. ?

Nā hiʻohiʻona hana
?Kiʻekiʻe refractory:ʻO ka refractoriness ka mea maʻamau ma luna o 2000 ° C, a hiki iā ia ke mālama i ka paʻa paʻa maikaʻi i ka wela kiʻekiʻe.
Kū'ē haʻalulu wela:Ma muli o ka haʻahaʻa haʻahaʻa hoʻonui hoʻonui, hiki iā ia ke hoʻololi i nā loli nui i ka mahana.
ʻO ke kūpaʻa o ka slag:He kūpaʻa ikaika ia i ka paʻa alkaline a me kekahi slag acidic, a kūpono loa ia no nā kaiapuni i ʻike ʻia i ka slag wela kiʻekiʻe.
Ke kū'ē i ka corrosion:Loaʻa iā ia ka ʻae ʻana i ka ʻakika-base alternating erosion a me ke kinoea erosion.
?Paʻa kemika:ʻO ka hopena paʻa i hoʻokumu ʻia e ka magnesium oxide a me ka chromium oxide i loko o nā pōhaku lepo magnesia-chrome he paʻa kemika‌ kiʻekiʻe.

Nā kahua noi
Hoʻohana nui ʻia nā pōhaku magnesium-chrome i nā ʻoihana o ka ʻoihana metallurgical, ʻoihana sima a me nā ʻoihana aniani.

ʻOihana Metallurgical:hoʻohana ʻia no ka uhi ʻana o nā mea wela kiʻekiʻe e like me nā mea hoʻololi, nā kapuahi uila, nā kapuahi hāmama, nā ladles a me nā kapuahi pahū i loko o ka ʻoihana kila, ʻoi aku ka maikaʻi no ke kaiapuni o ka mālama ʻana i ka alkaline slag kiʻekiʻe.

?ʻoihana sima:hoʻohana ʻia no ka ʻāpana ahi a me ka ʻāpana hoʻololi o nā kiln rotary cement e pale aku i ka ʻino ʻana o ka wela kiʻekiʻe a me ka lewa alkaline.

ʻoihana aniani:hoʻohana ʻia no nā regenerators a me nā ʻāpana o luna i loko o nā kapuahi hoʻoheheʻe aniani, a hiki ke kū i ka erosion o ka ea wela a me ka wai aniani alkaline.