SU908766A1 - Batch for expanded clay production - Google Patents

Description

(54) CHARGE FOR PRODUCTION OF CERAMSITE

I

The invention relates to the production of building materials and can be used in the manufacture of lightweight aggregates - expanded clay.

Known uuiXTa for the production of expanded clay lj "including, wt.%: Clay raw materials 90-93, pyrite cinders 6-8 and acidic tars 1-3.

The disadvantage of this mixture is the high bulk weight of expanded clay due to the uneven distribution; laziness organic supplements.

The most suitable for the offer is the charge for the production of expanded clay, including weight% of the clay: 94-99 clay raw materials, acid tar 0, t-4 and 0.9-2 hydrocarbon fraction,

The disadvantages of the known mixture are the need to use the hydrocarbon fraction, which contributes to the increased consumption of scarce oil products and increases the cost of the mixture, the relatively high viscosity of acid tar and its poor compatibility with clayey raw materials, which leads to a deterioration in the mechanical strength of claydite, the impossibility of recycling a large amount of industrial waste desulphurized acid tars product.

Purpose of the invention: increase in strength, decrease in bulk density

10 and the cost of expanded clay and protection of the environment.

The goal is achieved by the fact that the charge for the production of expanded clay, including clay (5 piers and acid tar), contains desulfurized acid tar in the following ratio of components, wt.%:

Clay raw materials 82-99,7

Desulfurized

ha

sour tar 0.3-18

Desulphurized acidic tar (DKG) is obtained by treating acidic tar water and steam or hot water at 95–200 ° C for 1–20 mnt

The characteristics used in the charge DKG are presented in table. one.

The manufacture of expanded clay from the proposed mixture is carried out as follows.

0.3-18 wt.% DKG having a temperature is introduced in 82-. 99.7 wt.% Of the clay raw material and the mixture is thoroughly mixed, granulated and dried at 200-500 s for 15-20 minutes, then calcined and expanded at 1000-1200 C for 5-10 min.

For the production of expanded clay used clay raw materials

Group chemical composition DKG, wt.%

Resin oil asphaltene substances

Water

Sulfur Constituents

Hydrocarbon fraction

Zhurzhevo-2 with the following characteristics:

Humidity, wt.% 23 Pasti, class I

In tab. Table 2 lists the composition of the mixture and the conditions for the production of expanded clay}. 3 - physical and mechanical parameters of haydite (example I-6 is proposed, 7 is well-known),

From tab. 3 it follows that the expanded clay of the proposed mixture has a smaller bulk density and greater strength than similar indicators of claydite from the known charge. Besides

In addition, the exclusion of hydrocarbon fraction from the charge makes it possible to reduce the cost of expanded clay.

Table

table 2

0.9-2 Components, indicators Condition I1 floor Sample DKG I Temperature, C 90 2030 DKG 200 460380 drying 1000 10561100 firing Time, min 10 25 mixing 15 1416 firing and swelling 8

Continued table. 2 Iinininj LTlLXLJ.L An example of no expanded clay 22215 17 10 500 320 490200-500 102 1127 12001010-1080 4 8 6To 15 16 12 2020-25 18 19 7-12

Claims (1)

Claim The mixture for the production of expanded clay, including clay raw materials and sour tar, characterized in that, in order to increase ⁵⁰ strength, reduce bulk density and cost of expanded clay and protect the environment, it contains desulfurized acid tar with the following ratio of components, wt.%: ⁵⁵ Clay raw materials 82-99.7 Desulfurized Acid Tar 0.3-18