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Method for preparing photocatalytic adsorption material from high-titanium blast furnace slag

A technology of high-titanium blast furnace slag and adsorption materials, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. High cost and other issues, to achieve the effect of simple preparation process, improved resource utilization, and low cost

Inactive Publication Date: 2019-01-04
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its weakness lies in the high cost of raw materials, high energy consumption, complicated process and long reaction time

Method used

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  • Method for preparing photocatalytic adsorption material from high-titanium blast furnace slag
  • Method for preparing photocatalytic adsorption material from high-titanium blast furnace slag
  • Method for preparing photocatalytic adsorption material from high-titanium blast furnace slag

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Embodiment 1

[0036] A method for preparing a photocatalytic adsorption material by using high-titanium blast furnace slag, the preparation method and application steps are as follows:

[0037] Grind the high-titanium blast furnace slag to 30-60um; then weigh 10g of high-titanium blast furnace slag fine powder and dissolve it in 200ml hydrochloric acid solution, the concentration of hydrochloric acid solution is 2mol / l, seal it with a sealing film and vibrate ultrasonically for 20min; then put it in a constant temperature water bath Heated in a water bath at 95°C for 12 hours; cooled to room temperature, centrifuged and washed with ultrapure water for 3 times, then centrifuged to collect the supernatant, and the supernatant was adjusted to pH 11.5 with 5mol / l NaOH solution; then sealed with a parafilm at 70 Heating in a water bath at ℃ for 16 hours; cooling to room temperature and then centrifuging, washing with ultrapure water for 3 times, centrifuging again to obtain a precipitate, and fin...

Embodiment 2

[0039] A method for preparing a photocatalytic adsorption material by using high-titanium blast furnace slag, the preparation method and application steps are as follows:

[0040] Grind the high-titanium blast furnace slag to 30-60um; then weigh 10g of high-titanium blast furnace slag fine powder and dissolve it in 200ml hydrochloric acid solution, the concentration of the hydrochloric acid solution is 3mol / l, seal it with a sealing film and vibrate ultrasonically for 20min; then put it in a constant temperature water bath Heated in a water bath at 90°C for 24 hours; after cooling to room temperature, centrifuged and washed with ultrapure water for 3 times, then collected the supernatant by centrifugation, and adjusted the pH of the filtrate to 10.5 with 10mol / l NaOH solution; Heating in a water bath at ℃ for 24 hours; cooling to room temperature and then centrifuging, washing with ultrapure water for 3 times, centrifuging again to obtain a precipitate, and finally freeze-dryin...

Embodiment 3

[0042] A method for preparing a photocatalytic adsorption material by using high-titanium blast furnace slag, the preparation method and application steps are as follows:

[0043]Grind the high-titanium blast furnace slag to 30-60um; then weigh 10g of high-titanium blast furnace slag fine powder and dissolve it in 200ml of hydrochloric acid solution, the concentration of the hydrochloric acid solution is 5mol / l, seal it with a sealing film and vibrate ultrasonically for 20min; then put it in a constant temperature water bath Heated in a water bath at 95°C for 18 hours; after cooling to room temperature, centrifuged and washed with ultrapure water for 3 times, then collected the supernatant by centrifugation, and adjusted the pH of the filtrate to 11.0 with 2mol / l NaOH solution; Heating in a water bath at ℃ for 18 hours; cooling to room temperature and then centrifuging, washing with ultrapure water for 3 times, centrifuging again to obtain a precipitate, and finally freeze-dryi...

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Abstract

The invention discloses a method for preparing photocatalytic adsorption material from high-titanium blast furnace slag. The method includes: grinding high-titanium blast furnace slag, dissolving intoacid solution, sealing, ultrasonically oscillating, heating in water bath, cooling to the room temperature, centrifuging, washing, re-centrifuging, collecting supernatant, adopting alkaline solutionfor adjusting pH of the supernatant, sealing, heating in water bath, cooling to the room temperature, centrifuging, washing, centrifuging to obtain a precipitate, and cooling and drying the precipitate to obtain the photocatalytic adsorption material. The preparation process is simple, low in cost and low in energy consumption; a great quantity of high-titanium blast furnace slag discharged in blast furnace smelting can be consumed, recycling of titanium-containing solid waste of steel enterprises is greatly promoted, high-titanium blast furnace slag storage space and cost are saved, and greatpractical significance and market competitiveness are achieved. The photocatalytic adsorption material is an aluminum-magnesium hydrotalcite loaded TiO2 material and integrates a TiO2 photocatalyticfunction and a negative ion adsorption function of aluminum-magnesium hydrotalcite.

Description

technical field [0001] The invention belongs to the field of material chemistry and comprehensive utilization of solid waste, and in particular relates to a method for preparing a photocatalytic adsorption material by using high-titanium blast furnace slag. Background technique [0002] High titanium blast furnace slag (TiO 2 content of 18-30%) has always been a research hotspot and difficulty in the comprehensive utilization of solid waste in the iron and steel industry. After the vanadium-titanium magnetite goes through the blast furnace ironmaking process, most of the titanium will be enriched in the blast furnace slag. In recent decades, a lot of research work has been done on the utilization of high-titanium blast furnace slag resources. Since no efficient and comprehensive utilization method for high-titanium blast furnace slag has been found, my country's iron and steel industry accumulates a large amount of high-titanium blast furnace slag every year, causing enviro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/30B01J23/34
CPCB01J20/041B01J20/06B01J20/08B01J20/103B01J23/34B01J2220/42B01J2220/4875B01J35/39
Inventor 高宏宇宋桢桢张伟军
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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