SU698959A1 - Charge for producing refractory articles - Google Patents

Description

I

The invention relates to the field of refractory materials, which can be widely used for the manufacture of lining elements and refractory products.

Famous shy dp manufactured refractories, including in wt.%:

Zircon 4. less than 0.06 mm 80-85

Ether of ortokremkievoj sour13, 05-17,4

you

Sol Na Acid

Water

Methyl Sipiconate Sodium

The disadvantage of the products of this composition is the insufficient strength of the raw material of the products, insufficient corrosion resistance and heat resistance, which limits its scope.

Closest to the proposed shaving is the charge for the manufacture of zircon refractory products, including a tirokorny briquette, deferred zircon, and as a binder, organosilane resin in an amount of 8-12 wt.% 2.

The products of this mixture have high strength and corrosion resistance, but not high enough heat resistance.

The purpose of the invention is to increase the heat resistance.

The goal is achieved by 1.31-2.51 that the charge includes ground shredded zir1, 91-2.54 horse briquette, zircon, and organosilaneum, 04-0.042 binder, and additionally contains meCl. sodium tilsilicate and chromium oxychloride oxychloride in the following ratio of components in wt.%:

Zircon4O - 45

Silica-organic

connection9-12

Methyl silicate sodium 0, 2 - 0.5

Oxychloride

or aluminum 0.1 - 4.5

Ground zircon briquette

At the same time, the charge contains zircon fractions of less than 0 "O6 mm, and crushed zircon briquette of a fraction of 5.0 - 0.5 mm in, the amount of 20-ZO weight,%, and fraction of less than 0.5 mm, 9-12 wt.%.

Moreover, the best results are obtained when the charge contains chromium oxychloride in an amount of 0.1-3.5 weight,%, and aluminum oxychloride in an amount of 2.54, 5 weight,%. Products get speduyutm way.

Example, Silicone ligand is prepared, aluminum or chromium oxychloride is introduced into it, the transfer is carried out for 20 seconds. 93%: zircon and 7% refractory clay) (jp. 5.0-0.5 mm, half is added to this fraction of briquette

the amounts of zircon briquette FR, less than 0.5 mm, are mixed thoroughly with a grain of 5.0-0.5 mm and injected into a mixer with a previously prepared slurry based on zircon FR, less than 0.06 mm. Then, with constant stirring, the residue fr. less than 0.5 mm. The finished mass is poured into collapsible metal forms, the mass is vibrated for 2-5 min, (amplitude 0.1 mm), after vibrating, the top surface is powdered with zircon powder comp. 0.2-0.1 mm. The ceramic mass in the forms is kept for 1-2 hours, then the hardened products in the forms are heated to a temperature of 8–95 ° C for 30–45 minutes, then the products are removed from the forms, dried and - roasted at 1480 ° C.

Specific compositions and properties of the products obtained are presented in table. one.

Table

1 „Composition, in weight„%

zirconium fr. less than 0.06 mm crushed zircon briquette

fr 5.0 - 0.5 mm

FR, less than 0.5 mm

Methyl sipsaton sodium

Organosilane binder

Aluminum Oxychloride Chromium Oxychloride

2. Product properties:

Porosity is open,%

Compressive Strength

kg / cm

Heat resistance, the number of thermal cycles 13OO C - 20

50 & ode

40

20 25 0.3 11.5

3.2 13.0 860

Claims (2)

50 Formula of the Invention Shade of a mixture for the manufacture of refractory products, including crushed zircon briquette, zircon, and silicon bonding, characterized in that, in order to improve heat resistance, it additionally contains sodium methyl silicate and chromium oxychloride for aluminum in the following ratio of components in weight% : Zircon 40-45 Cres meromorus anic bond 9-12 Methyl silicate sodium 0.2 - 0.5 Chromium or aluminum oxychloride 0.1 - 4.5 Crushed zirconia briquette The remaining 6 59 2. The mixture of p, 1, l t and h And so that it contains a circus fractions less than 0.06 mm, and crushed zircon briquette fraction 5.0 - 0.5 mm in the amount of 2O-30 wt.%, / a fraction less than 0.5 mm 9-12 wt.%. 3. Shift on PP. 1 and 2 are distinguished by the fact that it contains chromium oxychloride in an amount of 0.1-3.5 wt.%. 4. Shihta on PP. 1-3 / characterized in that it contains aluminum oxychloride in an amount of 5% by weight. Sources of information taken into account during the examination 1. USSR author's certificate NO 336316, cl. From 04 to 35/14, 1970. 2. USSR author's certificate number 235590, cl. From 04 to 35/48, 1967.