Preparation method for inorganic powder material and application

A technology of inorganic powder materials and precursors, applied in the direction of inorganic chemistry, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of high cost, and the cost of activated carbon itself and recovery cost are also limited, and the environmental requirements of aqueous solution High, large amount of chemical reagents and other problems, to achieve good industrial application prospects, clean and pollution-free preparation process, low cost effect

Active Publication Date: 2015-12-02
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, each treatment method has disadvantages
For example, the chemical method will produce flocculent sludge that is difficult to handle, and at the same time, the dosage of chemical reagents is large, which is likely to cause secondary pollution; the physical treatment method requires modification before adsorption by activated carbon, which increases the treatment cost. The cost also limits its application; the investment cost of using ion exchange resin or membrane separation method is large (the exchange performance of ion exchange resin decreases by half or less as the number of times of use increases, and it is suitable for water quality with a single ion component), and the amount of recovery is large. A large amount of chemical reagents need to be injected, resulting in high treatment costs; the use of biological treatment methods has strict requirements on the concentration of heavy metal ions, high requirements on the aqueous solution environment, and long treatment cycles
These defects make the existing processing methods have great limitations in practical application

Method used

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  • Preparation method for inorganic powder material and application
  • Preparation method for inorganic powder material and application

Examples

Experimental program
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Effect test

Embodiment 1

[0023] In the container, 3g CaCO 3 , 0.5gSiO 2 , 0.12gFe 2 o 3 and 0.16gAl 2 o 3 After grinding for 10 minutes, the mixture is obtained; the obtained mixture is placed in a muffle furnace and heated to 1000 ° C for 10 minutes, and after cooling, the roasted product is washed 3 times with tap water, and the washed roasted product is naturally dried and ground for 10 minutes to obtain the present invention. Described inorganic powder material, its scanning electron microscope picture is as follows figure 1 shown.

Embodiment 2

[0025] In the container, put 2.5gCaO, 1gSiO 2 and 0.3gAl 2 o 3 After grinding for 10 minutes, the mixture was obtained; the obtained mixture was placed in a muffle furnace and heated to 1000°C for 10 minutes, and the roasted product was washed once with tap water after cooling, and the washed roasted product was naturally dried and ground for 10 minutes to obtain the present invention. The inorganic powder material.

Embodiment 3

[0027] In the container, 3g CaCO 3 , 1.2gSiO2 2 , 0.2gFe 3 o 4 and 0.3gAl 2 o 3 After grinding for 10 minutes, the mixture was obtained; the obtained mixture was placed in a muffle furnace and heated to 900°C for 10 minutes, and the roasted product was washed once with tap water after cooling, and the washed roasted product was naturally dried and ground for 10 minutes to obtain the present invention. The inorganic powder material.

[0028] Treat the waste liquid containing nickel ion, copper ion, chromium (III) ion with the inorganic powder material obtained in embodiment 3, illustrate the inorganic powder material obtained by the present invention with the removal effect of copper ion and nickel ion processing power. Among them, the ion waste liquid comes from the electroplating factory.

[0029] The inorganic powder material obtained in Example 3 of the present invention treats nickel, copper, chromium (III) ion waste liquid as follows: add alkali in the ion waste li...

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Abstract

A preparation method for an inorganic powder material and application relate to a novel environmentally friendly material. The preparation method comprising carrying out the first grinding for oxides or / and oxide precursors; roasting; washing; drying; carrying out the second grinding to get the inorganic powder material. The oxides are selected at least three from CaO, MgO, SiO2, Fe3O4, Fe2O3, Al2O3 and so on, preferably the mixture of CaO, SiO2, Fe2O3 and Al2O3 in a mass ratio of 13:5:1:1.5; and the oxide precursors are selected at least three from Ca(OH)2, CaCO3, MgCO3, Mg(OH)2, Fe(OH)3, Al(OH)3 and so on. The inorganic powder material can be used in processing industrial heavy metal sewage.

Description

technical field [0001] The invention relates to an environmentally friendly new material, in particular to a preparation method and application of an inorganic powder material. Background technique [0002] Industrial water pollution has always been a key target of prevention and control. Many production and manufacturing industries, such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, instrumentation and other industries, will produce heavy metal wastewater in the production process, which seriously affects environmental safety. Heavy metal elements and their compounds will change the protein structure, affect the protein function, and then affect human health. Heavy metal pollutants are difficult to control. When they accumulate in a certain amount in the water body, they will cause serious harm to the biological system of the water body, and may affect human health through the food chain. However, heavy metal ions are discharged into th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/10B01J20/08B01J20/06C02F1/28C02F1/62C02F1/64
Inventor 郑南峰陶静方晓亮
Owner XIAMEN UNIV
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