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Method for preparing mineral wool fibers from leaching residues of hydrometallurgy laterite-nickel ore and application of mineral wool fibers

A technology of mineral wool fiber and laterite nickel ore, applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of uneven quality of mineral wool products, high viscosity of slag, uneven mixing of materials, etc.

Inactive Publication Date: 2020-07-21
河北中科同创道格赛尔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires slag to be added to the material at high temperature. Due to the high viscosity of the slag, the material is not mixed evenly after adding the material, resulting in uneven quality of the finished mineral wool.

Method used

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  • Method for preparing mineral wool fibers from leaching residues of hydrometallurgy laterite-nickel ore and application of mineral wool fibers
  • Method for preparing mineral wool fibers from leaching residues of hydrometallurgy laterite-nickel ore and application of mineral wool fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Use concentrated hydrochloric acid to leach laterite nickel ore leaching slag (serpentine-type laterite nickel ore or limonite-type laterite nickel ore) as raw material, and the size of the leaching slag powder is 0.1-20000 μm. The leaching slag is not prepared, and the leaching slag is directly placed in high temperature Furnace for melting. When the temperature of the high-temperature furnace is raised to 1500°C, it is kept warm for two hours, and the furnace hole is opened to flow the molten slurry to the rollers of the four-roller centrifuge, and then centrifuged at a high speed to form cotton. While centrifuging into cotton, resin glue is sprayed on the mineral wool, and then the cotton is collected by the cotton collector, conveyed to the pleating machine and pressurized by the conveyor, and then sent to the curing furnace for curing and molding, and finally cut The finished mineral wool board.

Embodiment 2

[0030] The leaching slag of laterite nickel ore leached with concentrated sulfuric acid (serpentine-type laterite nickel ore or limonite-type laterite nickel ore) is used as raw material, and the leaching slag is not prepared, and the leaching slag is directly put into a high-temperature furnace. Set the temperature of the high-temperature furnace to 1800°C, and as the temperature of the material increases gradually, the material begins to melt. After the material is melted, it flows out of the furnace body with the guide groove to the roller of the four-roller centrifuge under the action of gravity, and the material is continuously added for continuous production. The melted slurry flows to the rollers of the four-roller centrifuge, and is centrifuged at a high speed to become cotton. While centrifuging into cotton, resin glue is sprayed on the mineral wool, and then the cotton is collected by the cotton collector, conveyed to the pleating machine and pressurized by the conve...

Embodiment 3

[0032] like figure 1 As shown, the leaching slag of laterite nickel ore leached with concentrated hydrochloric acid (serpentine-type laterite-nickel ore or limonite-type laterite-nickel ore) is used as the basic raw material, mixed with bauxite for preparation, and the size of the preparation agent and leaching slag powder is 0.1 -20000μm, so that the acidity coefficient of the mixed material is 1.2. Add 10%-50% bauxite into the leaching slag, and then use a mixer to stir. After the materials are mixed evenly, after a certain treatment, the materials are put into a high-temperature furnace for melting, and the melting temperature is 1600°C. After the material is melted, under the action of gravity, it flows out of the furnace body with the material guide groove to the nozzle of the injection equipment, and the material is continuously added for continuous production. The melted slurry flows to the rollers of the four-roller centrifuge, and is centrifuged at a high speed to b...

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Abstract

The invention discloses a method for preparing mineral wool fibers from leaching residues of hydrometallurgy laterite-nickel ore and application of the mineral wool fibers. According to the method, leaching residues of the hydrometallurgy laterite-nickel ore are adopted as a raw material, a conditioning agent is added into the raw material, normal-temperature solid-state mixing and conditioning are performed to enable the acidity coefficient to be greater than or equal to 1.2, and then mixed material melting, discharging and filamentation are performed to obtain the mineral wool fibers; or, the leaching residues of the hydrometallurgy laterite-nickel ore are used as raw materials, and the raw materials are fused, discharged and filamented to obtain the mineral wool fibers. The method can reduce solid waste and environmental pollution, is used for preparing rock wool, improves the heat insulation performance of buildings, improves the energy utilization rate and reduces energy consumption.

Description

technical field [0001] The invention relates to the technical field of mineral wool production, in particular to a method for producing mineral wool by utilizing hydrometallurgical laterite nickel ore leaching slag. Background technique [0002] In the mineral smelting industry, whether it is hydrometallurgy or pyrometallurgy, a large amount of solid waste - slag will inevitably be produced. In the patent "A method for selectively leaching serpentine-type laterite nickel ore with hydrochloric acid" (application number: 201510007547.9), there is about 0.6 tons of leached slag solid waste per ton of laterite nickel ore. If the leaching slag is used reasonably to make rock wool products, on the one hand, it can not only reduce the pollution of solid waste to the environment, but on the other hand, the application of rock wool to buildings can play a role in heat preservation and improve energy utilization. People have done some research on the preparation of mineral wool from ...

Claims

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Application Information

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IPC IPC(8): C03B37/00C03B37/005C04B26/02
CPCC03B37/00C03B37/005C04B26/02C04B14/46
Inventor 曲景奎王腾跃张萌
Owner 河北中科同创道格赛尔新材料科技有限公司
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