SU1063796A1 - Batch for making aggregate - Google Patents

Description

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The invention relates to blend compositions used for the production of expanded clay, and can be applied in the ceramic industry to produce porous aggregates from low-grade clay raw materials. about

The closest to the one proposed is a raw mix, for a lightweight aggregate, including, wt%: clay raw materials 93.5-98.5, organic additive 0.5-1.5, alumina slag from ferrochrome production 1-5 .tlj.

The known raw material mixture is not sufficiently effective, since slag from the production of ferrochrome. Requires subtle fine grinding. The use of salt oil as an organic additive complicates the process of mass preparation due to poor solubility in water and easy flammability. .. In addition, the mixture is characterized by a high firing temperature and a low swelling rate,

The purpose of the invention is to reduce the firing temperature and increase the coefficient of expansion.

The goal is achieved by the fact that the fir for the production of fill. N, including clay raw materials; organic and mineral supplements, - contains acylal glycerin, as - organic supplement,. a B as mineral sludge of a metallurgical plant of composition, weightL: 20-40; CaO 15-40; MgO 1-2; 50 20-40 and at least. re one component from the group of CuO, ZnO, KiOo 2--10, with the following ratio of components, weight,%: Clay raw material 92.5-94.0 Acylal glycerin 0, Sludge metallurgical plant 5-7

Low-shattering clay with the following chemical composition,%, is used as a clay raw material; Si02 64.3 / ,,. 12.36 Fe20j.4.03, MgO 3.20-CoO, Hag O 2.60 Ca O 5.48, paragraph 8, 0 3 s

The main characteristics of clay;

Nasypna bulky

weight, kg / m 1500

Vopuchi ™ coefficient

bath 1.7-2.3

Humidity,% 17.6

Organic supplement - acylal lecserin (with H 0 C1).

zOCsHv .QCHs

-sNz-a {: .SngS1

OOSNz

Main characteristics; Boiling point, С

250

1.4340 Refractive index Density, g / cm 1.0693

Sludge of metallurgical plant has a humidity of 48-53%. The chemical composition of the sludge, -me,;:. 20-40 / CaO 15-40 MgO 1-2, - CuO, ZnO, iiO, 2-10 SOi, 20-40.

Making a filler: pre-crushed; g1 tmtinu career moisture mix; with organomineral additive -. glycerol glycerol and sludge meth: iJ.r / hygienic production. From the obtained.:, It is molded by plastic method granules with a diameter of 1.5-2 cm, which are dried and fired in a special muffle furnace for a million.

Specific sos: tav: -: the proposed charge and known are listed in Table 1. The physicomechanical indexes of the filler of the charge according to the invention and the known, as well as the teg.-firing temperature are indicated in tab: 1. 2,

As can be seen from Table 1, the introduction of n clay raw materials of the imploxant additive allows one to reduce the teN: firing rate (on) and increase the coefficient of expansion.

The reduction of the firing temperature and the increase in the swelling rate is due to the fact that isham contains up to 40% of alkaline earth metal oxides, which, in combination with eUO, provide a number of low-melting eutectics. The increase in the swelling coefficient is due to a significant release of gaseous products 30, SO-2 and COg. The image of ush is lost when decomposing the ideals of the organic additive. do not use prior training

The proposed LijHXTa for the manufacture of a filler as compared to the known one provides the possibility of obtaining a filler with a higher coefficient of expansion at lower temperatures, which contributes to fuel economy, increasing the efficiency of equipment, reducing the time of the production process.

T a b l and c i

iOffer

table 2

Claims (1)

MIXTURE FOR MANUFACTURING THE FILLER, including clay raw materials, organic and mineral additives, characterized in that, in order to reduce temperature and increase the coefficient of swelling, it contains acylal glycerol as an organic additive, and wt.% As a mineral slurry of a metallurgical plant. : Fe _c 0 ^ 20-40; CaO 15-40, * MgO 1-2 ', SO3 '20 -40 and at least one component from the CuO group, ZnO, NiO. ' Cr ₂ C> 3 2-10, in the following ratio of components, wt.%: Clay raw materials Acylal glycerol Sludge metallurgical plant .92.5-94.0. 0.5-1.0 5-7 with stock ί