Nawa ne tubalin rufin ɗaki?

The JM series of mullite insulation bricks have JM26, JM28, JM30, JM32 according to the use temperature. The market price of each piece is a few yuan per yuan. The price will fluctuate according to the content of different indicators and the demand. About mullite Regarding the related issues of how much the insulation brick is, the specific value should be jointly decided after consultation with the refractory manufacturer.

Mullite rufi tubali ne babban alumina refractory abu tare da mullite (3Al2O3 · 2SiO2) a matsayin babban crystal lokaci. Gabaɗaya, abun cikin alumina yana tsakanin 65% da 75%. Bugu da ƙari ga mullite, abun da ke ciki na ma’adinai ya ƙunshi ƙananan adadin gilashin gilashi da kuma cristobalite tare da ƙananan abun ciki na alumina; mafi girman abun ciki na alumina shima ya ƙunshi ƙaramin adadin corundum. Za a iya amfani da tubalin rufewa da yawa kai tsaye don rufin kilns masu zafin jiki, kuma an yi amfani da su sosai a cikin kilns na jigilar kaya, nadi, gilashin da kilns na petrochemical.

1. Product characteristics of mullite insulation bricks:

1. Low thermal conductivity da kyau thermal rufi sakamako;

2. Low najasa abun ciki yana da ƙananan ƙarfe akwatin alkali karfe da sauran oxide abun ciki, saboda haka, high refractoriness; babban abun ciki na aluminum yana sa ya kula da kyakkyawan aiki a cikin yanayin ragewa;

3. The mullite insulation brick has low thermal melting. Due to the low thermal conductivity, the mullite series of lightweight insulation bricks accumulate little heat energy, and the energy saving effect is obvious in the intermittent operation;

4. Girman bayyanar, hanzarta masonry, rage yawan laka mai raguwa, tabbatar da ƙarfi da kwanciyar hankali na masonry, don haka ya kara tsawon rayuwar rufi;

5. Mullite rufi tubalin da babban zafi matsa lamba ƙarfi;

6. Za’a iya sarrafa tubalin rufewa na mullite zuwa siffofi na musamman don rage yawan tubalin da haɗin gwiwa.

2. Classification of mullite insulation bricks:

According to its production process, there are two types of mullite lightweight insulation bricks: sintered mullite bricks and fused mullite bricks:

1. Sintered mullite tubalin da aka yi da high-alumina bauxite clinker a matsayin babban albarkatun kasa, ƙara karamin adadin yumbu ko raw bauxite a matsayin dauri wakili, da forming da harbe-harbe.

2. Fused mullite tubalin da aka yi da high alumina, masana’antu alumina da refractory lãka a matsayin albarkatun kasa, da kuma gawayi ko coke lafiya barbashi an kara a matsayin rage jamiái. Bayan gyare-gyare, ana yin su ta hanyar rage narkewar lantarki.

The performance and application of mullite insulation brick: high refractoriness, which can reach above 1790℃. The starting temperature of load softening is 1600～1700℃. Compressive strength at room temperature is 70～260MPa. Good thermal shock resistance. There are two types of sintered mullite bricks and fused mullite bricks. Sintered mullite bricks are made of high-alumina bauxite clinker as the main raw material, adding a small amount of clay or raw bauxite as a binder, and forming and firing. Fused mullite bricks use high alumina, industrial alumina and refractory clay as raw materials, add charcoal or coke fine particles as reducing agents, and are manufactured by reduction fusion method after molding. The crystallization of fused mullite is larger than that of sintered mullite, and its thermal shock resistance is better than that of sintered products. Their high temperature performance mainly depends on the content of alumina and the uniformity of mullite phase and glass distribution. Mainly used for hot blast stove top, blast furnace body and bottom, regenerator of glass melting furnace, ceramic sintering kiln, dead corner furnace lining of petroleum cracking system, etc.