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Method for preparing porose glass composite material using iron ore tailings

A technology of iron ore tailings and porous glass, applied in the field of mineral processing, can solve the problems of low utilization rate, environmental pollution, large emissions, etc., and achieve the effects of low production cost, uniform distribution of pores, and high compressive strength

Inactive Publication Date: 2006-10-25
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a kind of waste in the metallurgical industry, iron tailings have caused great pollution to the environment due to its large discharge and low utilization rate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Porous glass composites were prepared by a two-step method. Step 1: Prepare basic glass powder. The main chemical composition of the iron tailings used is SiO in weight percent 2 65%, Fe 2 o 3 22%, the rest CaO, Al 2 o 3 , MgO, MnO 2 and TiO 2 13%; with bauxite (Al 2 o 3 Content is 82% by weight percentage), calcium carbonate (analytical pure) and waste glass (SiO 2 The content is 69% by weight, Na 2 The O content is 11% by weight) to adjust the composition.

[0020] Its process steps are as follows:

[0021] (1) crushing: the iron tailings powder is obtained after the granular iron tailings are crushed with a prototype machine;

[0022] (2) Ball milling: finely grind the crushed iron tailings powder until the particle size of the raw material reaches below 200 mesh (74 μm);

[0023] (3) Batching: batching is carried out according to the composition and proportioning of the required preparation materials; in weight percentage, the batching is 56% of iron ta...

Embodiment 2

[0033] Porous glass composites were prepared by a two-step method. Step 1: Prepare basic glass powder. The main chemical composition of the iron tailings used is SiO in weight percent 2 70%, Fe 2 o 3 25%, the rest CaO, Al 2 o 3 , MgO, MnO 2 and TiO 2 5%; use bauxite (Al 2 o 3 Content is 85% by weight percentage), calcium carbonate (analytical pure) and waste glass (SiO 2 The content is 71% by weight, Na 2 The O content is 15% by weight) to adjust the composition.

[0034] Its process steps are as follows:

[0035] (1) crushing: the iron tailings powder is obtained after the granular iron tailings are crushed with a prototype machine;

[0036] (2) Ball milling: finely grind the crushed iron tailings powder until the particle size of the raw material reaches below 200 mesh (74 μm);

[0037] (3) Batching: batching is carried out according to the composition and proportioning of the required preparation materials; in terms of weight percentage, the batching is 65% of ir...

Embodiment 3

[0047] Porous glass composites were prepared by a two-step method. Step 1: Prepare basic glass powder. The main chemical composition of the iron tailings used is SiO in weight percent 2 61%, Fe 2 o 3 20%, the rest CaO, Al 2 o 3 , MgO, MnO 2 and TiO 2 19%; with bauxite (Al 2 o 3 Content is 76% by weight percentage), calcium carbonate (analytical pure) and waste glass (SiO 2 The content is 67% by weight, Na 2 The O content is 9% by weight) to adjust the composition.

[0048] Its process steps are as follows:

[0049] (1) crushing: the iron tailings powder is obtained after the granular iron tailings are crushed with a prototype machine;

[0050] (2) Ball milling: finely grind the crushed iron tailings powder until the particle size of the raw material reaches below 200 mesh (74 μm);

[0051] (3) Batching: batching is carried out according to the composition and proportioning of the required preparation materials; in terms of weight percentage, the batching is 48% of...

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Abstract

The invention is a method for preparing multiporous glass composite with ironstone gangue, adopting two steps: 1. adopting iron gangue, bauxite, calcium carbonate and waste glass as raw materials to prepare basic glass powder, crushing and finely grinding the iron gangue, and batching the iron gangue 48-65wt%, bauxite 5-9wt%, calcium carbonate 10-20wt%, and waste glass 15-30wt%; mixing them uniformly, melting and baking, water- quenching and grinding and finally obtaining the glass powder; 2. preparing multiporous glass ceramic materials, and adding in calcium carbonate in 1-5wt% of the basic glass, sodium phosphate in 6-10wt% of the basic glass, anhydrous sodium carbonate in 1-3wt% of the basic glass and borax in 1-6wt% of the basic glass, grinding and mixing them, and moulding and obtaining raw blanks, sintering the raw blanks at high temperature and cooling to normal temperature and finally obtaining the products. And the products have bulk densities of 1.5-2.8 g / cm3, normal- temperature tensile strength of 32-60 MPa and are good heat- insulating materials.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a method for preparing a porous glass composite material by using iron ore tailings. Background technique [0002] Porous glass and glass ceramics are new material systems developed in the 20th century. Because of its all-inorganic glass composition and independent closed pore structure, it endows it with many excellent characteristics. The use of cheap industrial solid waste, such as waste glass, slag, fly ash, etc., as raw materials to prepare low-cost, high-quality porous glass materials has been widely valued by people. [0003] At present, there have been reports in the literature on the preparation of porous glass materials from industrial solid waste such as waste glass and coal gangue, but so far, there has been no report on the preparation of porous glass composite materials from iron ore tailings at home and abroad. With the rapid development of...

Claims

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Application Information

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IPC IPC(8): C03C6/10C03B32/02C03C11/00C03C12/00
CPCC03C1/002
Inventor 薛向欣张淑会段培宁
Owner NORTHEASTERN UNIV
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