SU104437A1 - Lining the walls of steel furnaces - Google Patents

Description

Continue to work the steel-smelting furnaces without stopping for cold repair. It depends on the stability of the futures.

The lining of the walls of the main steel cladding furnaces is made of a refractory mass consisting of naz masnozitovogo annealed nopoHik and bonding refractory clay. However, such a lining has a number of items. one of which is. that magnesite and chromomagnesite react poorly to changes in temperature and this contributes to the development of lining. Due to the low resistance of the walls, a large amount of magnesite powder is consumed, which is a deficient II dor (h., The resistance of the walls from repair to repair ranges from 30; jo 7.) h.

Also known is the lining of walls of acidic steel. - Avilnye furnaces of mass containing quartz sand and liquid glass. The total resistance of the walls of KIS.LYH pepepets ranges from 50 to 100 heats.

The proposed lining has increased wall resistance. This is achieved by the use of special masses, which have been used for a number of personalities.

(1 lining the walls of the main ne4eii 5iii.nn from the mass, li the composition of Topoii 1; in () magnesite poroHjoK 85 - 94,, refractory clay 6-15 or 88 - 95p of chromo-magnesite norotc 5 and fire 5ophoiii g; pln. (c) Lining the walls of acidic furnaces. 92 quartz sands of a glass are introduced into the composition.

When systematically refilling the walls of MaccoiT of the specified composition of the walls of de .iaioTC.i mono.aitnymi, Sun, the first of which eliminates the need for their current repair.

In the drawing nzob1-) right in a schematic view to ..1adak furnace using lining mass.

When commissioned, the stationary, first, and first-day kiln furnaces are bricked as usual (magnesite and silica) to the level of slopes, the asbestos layer 2 of sheet asbestos is laid all over the casing 3, the same way is laid out 1). 4th brick for tenloizo. tsnp- Next, packing (magnesite or quartz sand) is done. 5, after which the walls are lined with bout of packing or Lie a U (asso |, consisting of magnesite and / chrome () magnesite 1 ×)

powder and bonding anti-clay clays. Moreover, this lining is used for main furnaces, and for acidic furnaces quartz sand and water glass are added to the composition.

Depending on the steel grade produced, 85 - 94 grinding magnesite waste bricks and 6 - 15. refractory clay and silicon are introduced into the composition for the wasps of the furnaces: n {88 - grinding chrome-magnesite brick waste and 5 - 12% refractory clay .

The grinding of all materials is brought to a fine fraction: the grain size is not more than 1 - 2 mm. Refractory clay is applied in.

Mass Ch) tovits on Jude. It is recommended that the convenience of comfort is good (o, yeni ny lining) it is recommended to prepare a mass on a liquid glass solution with a specific gravity of 1.3 with water, i.e. 50 | 1 l of liquid glass and 50% water.

The mass prepared for refueling must be viscous to adhere to the steppes of the furnace.

A refractory mass consisting of 92% quartz sand and 8% liquid glass prepared in a mixture of drinking water is used for lining walls in acidic kilns. Pre-sand is wet and clean. Liquid glass is used to ensure the welding of sand to the walls of the furnace.

Filling the walls and slopes of the furnaces, p, particularly with rolling out T-vOpnVCOM or with a BRANCH. I1CIM to the side,,: Important sand is performed as follows: the rear and side parts of the furnace walls are charged through the working window, the front part — through the top of the furnace, after rolling out of the body, or removal of the furnace roof, by filling the top with sand, filling 5 holes (damaged places) on the wall 15: this is an opera, and an excess of sand falls on the furnace slopes, which ensures simultaneous filling of the walls and slopes.

Filling walls in basic and acidic furnaces is produced mechanically or manually.

Subject invention

. The lining of the walls of steel-smelting furnaces is made by stuffing with a refractory mass consisting of quartz sand and liquid glass, so-called and h. that, in order to increase the resistance of the walls, 8% of quartz sand and liquid glass were introduced into the composition of the mass.

2. Modification of the lining according to claim 1, characterized in that, the fi lining of the main furnaces is introduced into the composition of the mass: magnesite powder of 85 - 94% and refractory clay 6 --- 15% or chrome-magnesite powder of 88 - 95% and refractory clay 5 - 12%.

Priority II. 2 December 15, 1949 1-.