Yakakwira alumina zvidhinha kuita mwero uye yakajairwa saizi

Sezvidhinha zvakajairika, yakakwirira-aluminium zvidhinha kuva nemazita akawanda mumashandisirwo emazuva ese. Heino pfupiso yeakatsanangurwa akadzama akajairika mazita emunhu wese.

Iyo kemikari yemhando yepamusoro alumina bauxite Mumakemikari emhando yepamusoro alumina alumina, iyo huru zvikamu ndeyeAl2O3 uye SiO2. Yayo yakajairika makemikari kuumbwa inorongedzerwa maererano nemakemikari anoumbwa uye kushandiswa kwebauxite.

Grades 1 to 6 are suitable for monohydrate duralumin type ore; Grade 7 is suitable for aluminum type ore. Al2O3 is the main component in bauxite. The higher the content, the better. The current production of industrial alumina requires that the ratio of aluminum to silicon is not less than 3.0. Other oxides are regarded as impurities. SiO2 is a harmful impurity in the production of alumina by alkaline method. The high content of SiO2 in bauxite will reduce the production efficiency of smelting brown corundum or producing industrial alumina.

TiO2 and Fe2O3 in high alumina bauxite are the two main impurities. The content of TiO2 tends to increase simultaneously with the increase of Al2O3. Studies have shown that: TiO2 in the secondary high alumina bauxite mainly forms a solid solution with mullite, and the amount of entering into the glass phase is small, which is not good for the sintering of the product, but it is beneficial to improve the high temperature mechanical properties of the product; In bauxite, TiO2 enters the glass phase more, which will increase the amount of liquid phase and reduce the viscosity of the liquid phase, which is conducive to sintering, but is not conducive to improving the high-temperature performance of the product. The alkali metal oxides K2O and Na2O of high alumina bauxite are very strong fluxes, and they produce a liquid phase at a lower temperature. When its content is too high, it will affect the phase composition and content of the clinker and the product, and adversely affect the performance of the product. The content of CaO in high alumina bauxite is generally low, about 0.2%. Its existence is detrimental to the high-temperature performance of the product, and its content is also limited in technical conditions.

1. Ukuru hwezvidhinha zvinoramba zvine chidhinha chakakwirira chealumina No. T-46 is a275 b230 c150 e80 d15 α 60 ° Vhoriyamu 6565 Uremu (chidhinha chevhu) 13.5 Weight (semi-silica brick) 13.1 Weight (semi-silica brick) 12.5;

2. Ukuru hwezvidhinha zvinoramba zvine chidhinha chakakwirira chealumina No. T-47 is a275 b230 c450 e80 d15 α 60 ° Volume 19695 uremu (chidhinha chevhu) 40.4 uremu (semi-silica brick) 39.4 uremu (semi-silica brick) 37.5;

3. Ukuru hwezvidhinha zvinoramba zvine chidhinha chakakwirira chealumina No. T-48 is a275 b275 c150 e65 d65 α45 ° Volume 8040 Uremu (chidhinha chevhu) 16.5 Weight (semi-silica brick) 16.1 Weight (semi-silica brick)

4. Hukuru hwezvidhinha zvinoramba zvidhinha ndeye T-3. Saizi yezvidhinha zvinoramba ndeye 230 * 113 * 65. Iyo yenyika chiyero uye hushumiri chiyero zviyero zvakada kufanana kureba X upamhi X ukobvu T-1: 172*114*65, T-2: 230*114* 32, T-3: 230*114*65