SU1404487A1 - Initial material mixture for producing porous sinter - Google Patents

Abstract

The invention relates to the production of building materials and can be used in the manufacture of agloporite from sandy clay raw materials with an additive from industrial waste. In order to increase the yield of agloporite gravel, the mixture contains, wt%: clayey raw materials 76.5-87.6; ash from COAL 7.6-10.4 and lime waste from sugar production 4.8-, 13.1. The resulting agloporite is characterized by a bulk density of 725 - 750 kg / m, compressive strength in cy- tandr 1.64-1.72 MPa, water absorption 10.0-10.8%. The yield of agloporite gravel is 95-100%. 2 tab. SS (L

Description

 about

i4 4

00

The invention relates to the production of building materials and can be used in the manufacture of agloporite from sandy clay raw material with a combined additive from industrial wastes.

The purpose of the invention is to increase the yield of agloporite gravel.

PRI me R. For the preparation of the raw mix, sandy clay — Taldy-Kurgan region loam, fuel-bearing fly ash from the combustion of the Kuznetsk coal basin and calcareous waste from the sugar industry — defecate, whose chemical composition is presented in Table 1 are used.

The loam, fuel-containing ash and defecate prepared for roasting are thoroughly mixed in a small-size mixer, and then transferred to a laboratory dish-type granulator (bowl diameter 1.0 m), where it is pelletized to obtain granules. Humidity of granules 16-19, the size of 10-15 mm. The granules are burned with a layer in the agglobald.

A mixture of propane and butane is used to ignite the mixture. The height of the layer is 200-300 mm, the rate of air suction through the layer of granulated mixture during firing is 0.40-0.45 mm / s. The maximum firing temperature is 1300 1350 ° C.

The compositions of the mixture and the properties of the resulting agloporite are presented in table 2.

The raw material mixture in comparison with the known one provides an increase in the yield of agloporite gravel up to 95 100% against 30%.

When roasting, the presence in the charge of small fuel components of ash ash allows

ten

t y

1404487

; ensure even firing. granules without their melting and welding together, while simultaneously reducing the heat consumption for firing by 15-20%. The production of a gravel-like product, in addition to improving its construction technical properties, allows accelerating the sintering process to 15–18 mm / min versus 8.4 mm / min.

The application of the proposed mixture allows to obtain high-quality gravel-like aggregate on substandard clay raw materials and waste, to reduce the unit cost of heat per unit of production while reducing bulk density and increasing productivity.

Claims (1)

Formula invented and. Raw mix for agloporite, including clay raw material, fuel-containing additive and plasticizer, characterized in that, in order to increase the output of agloporite gravel, it contains loam as a clay raw material, as a fuel-containing additive. coal ash with a coke residue content of 30-50%, and limestone waste from sugar production as a plasticizer in the following ratio of components,% by weight :. 76.5-87.6 7.6-10.4 4.8-13.1 Ya.I.P.Sii Soderzhdvia komammvgm, mm.h, 8 South SiOa ceoS Cho p Suglm ok Defaha EOL4 7.47-7.00 62.01-62.88 2b ,, 10.07-11.20 3.6 (LZ, 32 8.15-7.43 2.98-2.26 g ",,, 3 "2.5624,302.47 53,4327.94-P, 911,632,700,63 (Table I Cho r. T MgO The content of components in the mixture, wt.%: clay raw materials coal ash calcareous waste of sugar production (defecation) Characteristics of the filler fraction 5-20 mm: total density, kg / m compressive strength in the cylinder, MPa water absorption,% yield of agloporite of gravel-like form,% vertical sintering speed agloshhty, mm / min specific performance heat consumption for firing, K 10, kcal / m Table 2 82,176,5 9,010,4 8,913,1 725750 890 1.721.69 0.45 10,010,8 12,8 95 100 98 30 16.0 18.2 15.1 8.4 0.98 1.12 0.90 0.31 395 390 380 630