SU1411315A1 - Method of producing unburnt filler - Google Patents

Abstract

The invention relates to the production of building materials and products and can be used to obtain a non-calcined wood-fiber aggregate in the manufacture of wood concrete. In order to obtain an arbosolitic filler with a reduced density of its core, it is made of crushed softwood and hardwood treated with 3% calcium chloride solution, and the shell is rolled in a granulator of brown coal ash with a ratio of free CaO to total CaO 0.14 - 0, 32, wherein the ratio of ash and calcium chloride solution to crushed matter is wt.h. 1.0 - 1.2 and 0.7 - 0.9. The resulting aggregate is characterized by a bulk density of 250 - 270 kg / m compressive strength of 2.9, 7 Sha. and water absorption 15.5-33.0%. 1 tab. (L

Description

ate

The invention relates to the production of building materials and products and can be used to obtain a non-calcined wood-fiber aggregate in the manufacture of wood concrete.

The purpose of the invention is to obtain an arbosolite filler with a low density,

The method of obtaining a free-sack filler involves preparing a core from wood fiber material, coating the core with a binding component and subsequent curing, and the core is made from crushed softwood and hardwood crushed with 3% solution of calcium chloride and hardwood brown coal. ratio in, its free CaO to total CaO 0.14- 0.32.

Example. To implement the

comp. d1) A lining of coniferous and hardwood fractions of 5-20 and 1 5 mm and ash from burning coal, which is characterized by the following chemical composition,%: SiOj 22.62 - 24.70; A1gO, 1 U38 - 13.97; FegOj 12.14 - 12.32; MgO 4.31-5.85; SOg 4.66 - 5.19 P.P.P. 2.38 - 4.64; GaO 35.27 - 36.45, CaO ratio ,. to CaOgsa is 0.14 - 0.32. At fluctuations of free CaO to a common one at various TPPs, it is possible to use a mixture of ashes. Ashes with a CaOgj ratio of 0.135 - 0.313 can also be used.

The crushed material with a moisture content of 8–12% is moistened with the method of irrigation with a 3% solution of calcium chloride and coated when coated on a plate.

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granule torus sheath nz high calcium lignite ash. At the same time, the ratio of ash and calcium chloride solution to the crushed fraction of 5-20 mm in the range of 1.0 - 1.2 and 0.7 - 0.9, and to sawdust of 1-5 mm fraction, respectively, 2.2-2.5, and 1.5-1.8. After the shell is cured from brown ash, the prepared aggregate is used to make arbolite products.

Indicators of the properties of the proposed filler are presented in the table in comparison with the known.

When preserving the physicomechanical properties of strength and water absorption, the proposed aggregate is characterized by a lower bulk density.

The use of high calcium lignite ash eliminates cement and water glass as a binding component in preparing the aggregate for making arbolite products and contributes to saving the consumption of this emulsion.

Claims (1)

Invention Formula The method of obtaining an unburned aggregate by preparing a core from wood fiber material, coating the core with a binding component and subsequent solidification, characterized in that, in order to obtain a reduced density arbosolite aggregate, a core of coniferous and hardwood crushed is treated with 3% - a solution of calcium chloride, and the shell is rolled in an ash granulator, in which the ratio of free CaO to; total CaO is 0.14 - 0.32. Indicators 1411315 The value of the indicators by the method Type of placeholder The core of the crushed core The core of the osprey with a shell of bubo shell of alumina ash and cement and a shell of a mixture of ash and water glass Bulk density, kg / m Compressive strength, MPa Water absorption,% Offered Lime 350 - 380 1.6 - 3.0 15 - 34