RU2354624C1 - Phosphate clay material - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: phosphate clay material including loam, iron-containing metallurgical waste including Fe (II) oxide, with sieve residue of 7-11 wt % on sieve № 008, orthophosphoric acid of 1.24-1.25 g/cm³ density, and additionally includes tailings of iron ore dressing with sieve residue of 7-10% on sieve № 008, including, wt %: Fe₂O₃-4.35, FeO-2.11, Fe²⁺-0.203; SiO₂-42.0, CaO-20.15, MgO-14.06, Al₂O₃-6.21, MnO-0.051, TiO₂-0.404, P⁵⁺-0.183, S-0.284, at the mollowing component ratio, wt %: loam - 60-65, indicated iron-containing waste - 6-8, indicated tailings of iron ore dressing - 10-15, the rest is orthophosphoric acid of 1.24-1.25 g/cm³ density.

EFFECT: enhanced durability of phosphate clay material without impairing water resistance.

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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 metallurgical waste with a residue on sieve No. 008, containing Fe (II) oxide 7-11 wt.%, Phosphoric acid, density 1.24-1.25 g / cm ³ , additionally contains tailings for the concentration of iron ores with a sieve residue No. 008 of 7-10%, containing, wt.%: Fe ₂ O ₃ - 4.35; FeO - 12.11; Fe - 0.203; SiO ₂ - 42.0; CaO - 20.15; MgO - 14.06; Al ₂ O ₃ - 6.21; MnO 0.051; TiO ₂ 0.404; P is 0.183; S - 0.284, in the following ratio of components, wt.%:

Loam 60-65 Iron-containing metallurgical waste production with residue on sieve No. 008, containing Fe (II) oxide 7-11 wt.% 6-8 The specified tailings 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 tailings for the concentration of iron ores.

Material manufacturing. A mixture consisting of loam, iron-containing waste of metallurgical production with a residue on sieve No. 008 containing Fe (II) oxide of 7-11 wt.% And enrichment tailings of the Korshunov mining complex of the Irkutsk region, is mixed and closed with orthophosphoric acid with a density of 1.24-1, 25 g / cm. 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 (GOST 65-52-80), tailings for iron ore dressing of the Korshunov mining and processing complex of the Irkutsk region, with a sieve residue No. 008 of 7-10%, containing, wt. %: Fe ₂ O ₃ - 4.35; FeO - 12.11; Fe ²⁺ - 0.203; SiO ₂ - 42.0; CaO - 20.15; MgO - 14.06; Al ₂ O ₃ - 6.21; MnO 0.051; TiO ₂ 0.404; P ⁵⁺ - 0.183; S - 0.284.

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

To determine the size modulus, small fractions of iron-containing waste from metallurgical production and iron ore dressing tailings with a particle size of less than 5 mm were screened on a standard set of sieves according to GOST 8735-88.

The strength of the 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 tailings for the concentration of iron ores with a sieve residue No. 008 of 7-10%, containing, wt.%: Fe ₂ O ₃ - 4.35; FeO - 12.11; Fe ²⁺ - 0.203; SiO ₂ - 42.0; CaO - 0.15; MgO - 14.06; Al ₂ O ₃ - 6.21; MnO 0.051; TiO ₂ 0.404; P ⁵⁺ - 0.183; S - 0.284, makes it possible to increase the strength of the clay phosphate material in comparison with the prototype.

Claims (1)

Clay-phosphate material containing loam, iron-containing metallurgical waste containing oxide Fe (II), with a sieve residue No. 008 of 7-11 wt.%, Phosphoric acid with a density of 1.24-1.25 g / cm, characterized in that it additionally contains iron ore dressing tailings with a sieve residue No. 008 of 7-10%, containing, wt%: Fe ₂ O ₃ - 4.35, FeO - 12.11, Fe ²⁺ - 0.203, SiO ₂ - 42 , 0, CaO - 20.15, MgO - 14.06, Al ₂ O ₃ - 6.21, MnO - 0.051, TiO ₂ - 0.404, P ⁵⁺ - 0.183, S - 0.284, in the following ratio of components, wt. %:
Loam 60-65 Iron-containing metallurgical waste production containing oxide of Fe (II), with a sieve residue No. 008 - 7-11 wt.% 6-8 Specified Iron Ore Dressing Tails 10-15 Phosphoric acid with a density of 1.24-1.25 g / cm ³ Rest