Technology for preparing baking-free bricks with iron tailings, secondary aluminum ash and acid leaching magnesium residues

A technology of aluminum ash slag and unburned bricks, which is applied in the manufacture of rayon, single-component polyolefin rayon, and fiber chemical characteristics, can solve the problems of unfavorable fiber concrete collective interface, poor concrete dispersion, and difficult mixing. Achieve good mechanical properties and hydrophilic properties, reduce the amount of cement, and good alkali resistance

Inactive Publication Date: 2019-01-04
枞阳县天筑新型建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As an engineering fiber with excellent performance, polypropylene fiber has its main advantages: good mechanical properties, chemical corrosion resistance, and no insects, but it also has some fat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] A process for preparing non-burning bricks by utilizing iron tailings-secondary aluminum ash slag-acid-leaching manganese slag, characterized in that, comprising the following steps:

[0024] (1) Melt blending modification of polypropylene fibers:

[0025] Add 0.006 part of stearic acid to 0.3 part of ground calcium carbonate, and after wet activation at 85-95 ° C for 45min, dry and grind it; blend it with 1 part of polypropylene fiber and 0.1 part of polyethylene glycol , using a 180-200 ℃ twin-screw extruder for blending and granulation, drying the blended pellets at 104-106 ℃, and using a melt spinning machine to grow filaments to obtain modified polypropylene fibers;

[0026] (2) Pretreatment of secondary aluminum ash slag of raw materials:

[0027] Put 155 parts of secondary aluminum slag into a 120-125 ℃ electric heating blast drying oven to dry for 3 hours, cool naturally, take it out, and grind it with a ball mill to obtain secondary aluminu...

Example Embodiment

[0034] Example 2

[0035] A process for preparing non-burning bricks by utilizing iron tailings-secondary aluminum ash slag-acid-leaching manganese slag, characterized in that, comprising the following steps:

[0036] (1) Melt blending modification of polypropylene fibers:

[0037] Add 0.012 parts of stearic acid to 0.6 parts of heavy calcium carbonate, and after wet activation at 85-95 ° C for 55 minutes, dry and grind it; blend it with 2 parts of polypropylene fibers and 0.2 parts of polyethylene glycol , using a 180-200 ℃ twin-screw extruder for blending and granulation, drying the blended pellets at 104-106 ℃, and using a melt spinning machine to grow filaments to obtain modified polypropylene fibers;

[0038] (2) Pretreatment of secondary aluminum ash slag of raw materials:

[0039] Put 165 parts of secondary aluminum ash slag into a 120-125 ℃ electric heating blast drying oven to dry for 4 hours, cool naturally, take it out, and grind it with a ball mill to obtain seco...

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PUM

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Abstract

The invention discloses a technology for preparing baking-free bricks with iron tailing-secondary aluminum ash-acid leaching magnesium residues. The iron tailings, aggregate river sand and gel materials are mixed with the pretreatment secondary aluminum ash and quick lime pretreatment acid leaching magnesium residues, uniform stirring is conducted, mixing water is added for pre-activation, then anadditive is added, stirring is conducted in advance, wheel-grinding mixing is performed, final stirring is conducted, after ageing, the mixture is injected into a forming mold, forming pressure is set, by the adoption of staged pressurizing, the mixture is pressed to be formed under constant pressure, and after steam curing maintaining is conducted in an autoclave, the baking-free bricks are obtained through natural maintaining. Quick lime is adopted for pretreating acid leaching magnesium residues and added into the acid leaching magnesium residues to form an alkaline environment, under alkaline conditions, part of heavy metal ions precipitate, meanwhile, a good adsorption effect on ammonium radical ions is realized, pollution of ammonium radical degradation to air is prevented, and a good excitation effect on acid leaching spiegel residues is realized; the active performance of the magnesium residues is excited, and after gel substances and aggregate are added for uniform mixing andstirring, the baking-free bricks are prepared through the method of pressing forming.

Description

technical field [0001] The invention belongs to the technical field of non-burning bricks, and in particular relates to a process for preparing non-burning bricks by using iron tailings-secondary aluminum ash slag-acid leaching manganese slag. Background technique [0002] my country's iron tailings discharge and accumulation are huge. A large amount of iron tailings piled up not only caused serious damage to the environment, but also took up a lot of cultivated land and brought huge safety hazards to the people around the tailings pond. The use of iron tailings to prepare unburned bricks is not only conducive to the sustainable development of mining enterprises, but also can well implement the purpose of building a healthy, environmentally friendly, and resource-saving society in my country. [0003] Lead ash is the waste residue of lead smelting and secondary lead recovery. In industry, lead ash is mainly used to purify elemental lead, recover salt, and be used as deoxidi...

Claims

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Application Information

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IPC IPC(8): C04B28/02D01F6/46D01F1/10
CPCC04B28/02C04B2201/50D01F1/10D01F6/46C04B22/064C04B18/08C04B22/143C04B18/12C04B14/06C04B18/144C04B18/0481C04B22/124C04B22/147C04B24/18C04B2103/302C04B24/122C04B16/0633
Inventor 方明珠
Owner 枞阳县天筑新型建筑材料有限公司
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