RU2308432C1 - Clay phosphate material - Google Patents

Abstract

FIELD: manufacture of building materials; manufacture of building blocks.

SUBSTANCE: proposed clay phosphate material contains loam, iron-containing waste of metallurgical process at residue on sieve No. 008 containing oxide of Fe (II) 7-11 mass-%, ortho-phosphoric acid at density of 1.24-1.25 g/cm³ ; it additionally contains waste of crystalline silicon production process of the following composition, mass-%: SiO₂, 90.0-94.0; Fe₂O₃, 1-3; CaO, 0.7-1.4; MgO, 0.2-0.4; Na₂O+K₂O, 0.1-0.5; Al₂O₃, 0.7-1.5; SO₂, up to 0.09; SiC, up to 3 at the following ratio of components, mass-%: loam, 60-63; iron-containing waste of crystalline silicon production process, 10-15; the remainder being ortho-phosphoric acid at density of 1.24-1.25.

EFFECT: enhanced strength at retained waterproofness.

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Description

The invention relates to the field of building materials and can be used in the manufacture of building blocks.

Known materials based on clay, loam, phosphoric acid and additives - oxides of d-metals. (Latutova MN, Svatovskaya LB, Chibisov NP and others. Physical and chemical features of hardening of GLINFs and ALUMPHs - L.: Stroyizdat, "Cement" No. 10, 1990, pp. 11-12). These known aluminophosphate materials harden in air and are water resistant.

The closest in technical essence to the claimed technical solution is selected for the prototype aluminophosphate material of the following composition (wt.%):

loam 71-74 iron waste metallurgical production with residue on sieve No. 008, containing Fe (II) oxide 7-11 wt.% 5-7 orthophosphoric acid density 1.24-1.25 g / cm ³ rest

(Patent RU No. 2148563, С04В 28/34, 05/10/2000).

The disadvantage of this aluminophosphate material is its low strength.

The objective of the invention is the creation of a new clay phosphate material with high strength while maintaining water resistance.

The solution to this problem is achieved by the fact that the clay-phosphate material containing loam, iron-containing waste of metallurgical production with a residue on a sieve No. 008, containing Fe (II) oxide 7-11 wt.%, Phosphoric acid with a density of 1.24-1.25 g / cm ³ further comprises a crystalline silicon production waste with a residue on sieve No. 008, containing, wt%: SiO ₂ 90.0-94.0, Fe ₂ O ₃ 1-3, CaO 0.7-1.4, MgO 0 , 2-0.4, Na ₂ O + K ₂ O 0.1-0.5, Al ₂ O ₃ 0.7-1.5, SO ₂ up to 0.09, SiC up to 3, in the following ratio of components, wt.%:

loam 60-63 iron waste metallurgical production with residue on sieve No. 008, containing Fe (II) oxide 7-11 wt.% 4-8 specified waste 10-15 phosphoric acid density 1.24-1.25 g / cm ³ rest

New in comparison with the prototype to increase the strength of the material is the use of crystalline silicon production waste with a residue on sieve No. 008, containing wt.%: SiO ₂ 90.0-94.0, Fe ₂ O ₃ 1-3, CaO 0.7- 1.4, MgO 0.2-0.4, Na ₂ O + K ₂ O 0.1-0.5, Al ₂ O ₃ 0.7-1.5, SO ₂ up to 0.09, SiC up to 3 .

Material production

A mixture consisting of loam, iron-containing waste from metallurgical production with a residue on sieve No. 008 of 5-7% containing Fe (II) oxide and a waste from the production of crystalline silicon from the Bratsk aluminum plant with a residue on sieve No. 008, containing, wt.%: SiO ₂ 90.0-94.0, Fe ₂ O ₃ 1-3, CaO 0.7-1.4, MgO 0.2-0.4, Na ₂ O + K ₂ O 0.1-0.5, Al ₂ About ₃ 0.7-1.5, SO ₂ up to 0.09, SiC up to 3 are mixed and closed with phosphoric acid with a density of 1.24-1.25 g / cm ³ . The following materials are used: iron-containing waste of the following basic composition, wt.%: FeO - 96; CuO - 0.1; Al ₂ O ₃ - 0.4; Mo ₃ O ₄ - 0.1; NiO - 0.2; SiO ₂ 2.0; Cr ₂ O ₃ - 0.3; C - 0.3; loam; phosphoric acid with a density of 1.24-1.25 g / cm ³ .

After hardening in air, a water-resistant clay phosphate material with increased strength is obtained, which can be used in construction.

To determine the coarse modulus, the fine fraction of iron-containing waste from metallurgical production and the fine fraction of waste from the production of crystalline silicon with particle sizes less than 5 mm were screened on a standard set of sieves according to GOST 8735-88.

Strength of materials is determined in accordance with GOST 10180.

Examples of compositions and test results are presented in the table.

Analysis of the table shows that the additional use of the waste from the production of crystalline silicon, with a residue on sieve No. 008, containing, wt.%: SiO ₂ 90.0-94.0, Fe ₂ O ₃ 1-3, CaO 0.7-1, 4, MgO 0.2-0.4, Na ₂ O + K ₂ O 0.1-0.5, Al ₂ O ₃ 0.7-1.5, SO ₂ up to 0.09, SiC up to 3, gives the ability to increase the strength of the phosphate material in comparison with the prototype.

Table The composition of the material, wt.% Compressive strength, MPa, after water saturation Loam 60 Iron-containing metallurgical waste production with residue on sieve No. 008, containing Fe (II) oxide (7-11 wt.%) four 11.7 Crystalline silicon production waste, containing, wt.%: SiO ₂ - 94.0, Fe ₂ O ₃ - 1, CaO - 0.7, MgO - 0.3, Na ₂ O + K ₂ O - 0.4, Al ₂ O ₃ - 1.2, SO ₂ - 0.05, SiC - 2.35 10 Orthophosphoric acid density 1.24 g / cm ³ 26 Loam 61 Iron-containing metallurgical waste production with residue on sieve No. 008, containing Fe (II) oxide (7-11 wt.%) 6 11.8 Crystalline silicon production waste, containing, wt.%: SiO ₂ - 93.0, Fe ₂ O ₃ - 2, CaO - 1.2, MgO - 0.2, Na ₂ O + K ₂ O - 0.1, Al ₂ O ₃ - 0.7, SO ₂ - 0.09, SiC - 2.71 13 Orthophosphoric acid density 1.245 g / cm ³ twenty Loam 63 Iron-containing metallurgical waste production with residue on sieve No. 008, containing Fe (II) oxide (7-11 wt.%) 8 12.0 Crystalline silicon production waste, containing, wt.%: SiO ₂ - 90.11, Fe ₂ O ₃ - 3, CaO - 1.4, MgO - 0.4, Na ₂ O + K ₂ O - 0.5, Al ₂ O ₃ - 1.5, SO ₂ - 0.09, SiC - 3 fifteen Orthophosphoric acid density 1.25 g / cm ³ fourteen Loam 71-74 Iron-containing metallurgical waste production with residue on sieve No. 008, 9.0 containing Fe (II) oxide (7-11 wt.%) 5-7 Orthophosphoric acid density 1.24-1.25 g / cm rest

Claims (1)

A clay-phosphate material containing loam, iron-containing metallurgical waste with a residue on sieve No. 008, containing Fe (II) oxide 7-11 wt.%, Phosphoric acid with a density of 1.24-1.25 g / cm ³ , characterized in that it additionally contains waste from the production of crystalline silicon composition, wt.%: SiO ₂ 90.0-94.0, Fe ₂ O ₃ 1-3, CaO 0.7-1.4, MgO 0.2-0.4, Na ₂ O + K ₂ O 0.1-0.5, Al ₂ O ₃ 0.7-1.5, SO ₂ up to 0.09, SiC up to 3 in the following ratio of components, wt.%: Loam 60-63 Iron-containing metallurgical waste production with residue on sieve No. 008, containing Fe (II) oxide 7-11 wt.% 4-8 Specified crystalline waste silicon 10-15 Phosphoric Acid Density 1.24-1.25 g / cm ³ Rest