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Chlorinated waste residue resource utilization method

A technology of recycling chlorinated waste slag, which is applied in the field of resource utilization of chlorinated waste slag, can solve the problem of high metal content and achieve the effect of facilitating precipitation

Active Publication Date: 2020-08-07
YIBIN HAIFENG HERUI +2
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a resource utilization method of chlorination waste residue, which solves the problem of high metal content in ammonium chloride prepared by using chlorination waste residue in the prior art

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  • Chlorinated waste residue resource utilization method

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Experimental program
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Embodiment Construction

[0033]In the following, the present invention will be further described in conjunction with the experiment. According to the mass ratio of chlorination waste residue to water is 1:3, the slurry is carried out, then the titanium-rich material and petroleum coke are removed by filtration, and the mother liquor of chlorination waste residue is obtained, and the composition of the obtained chlorination waste residue mother liquor is detected. , the results are shown in Table 1:

[0034] Table 1

[0035] Element FeCl 2 / FeCl 3

VOCl 3

MgCl 2

AlCl 3

other pH content / % 15.8 0.23 2.25 5.32 2.53 0.73

[0036] The specific steps of the experiment are as follows: Each experimental group takes 400ml of the chlorinated waste residue mother liquor, adds urea of ​​different qualities, and the addition amount is shown in Table 2, stirs at 100r / min for 30min, and puts it into a 250mL hydrothermal reaction kettle after stirring; The amount ...

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Abstract

The invention discloses a chlorinated waste residue resource utilization method which comprises the following steps: (1) adding water into chlorinated waste residues, performing stirring, dissolving and slurrying, and then carrying out solid-liquid separation to remove a titanium raw material and a reducing agent petroleum coke to obtain chlorinated waste residue mother liquor; (2) adding a precipitant into the chlorinated waste residue mother liquor, performing uniform stirring, then adding into a hydrothermal reaction kettle, carrying out hydrothermal reaction, and carrying out solid-liquidseparation after the reaction is finished, so as to obtain solid and liquid; and (3) oxidizing and roasting the solid to obtain iron oxide red, and evaporating and crystallizing the liquid to obtain ammonium chloride. According to the method, urea is adopted as a precipitator, the pH value after hydrothermal reaction is controlled, the material volume in the hydrothermal reaction kettle is controlled, metal ions in the chlorinated waste residue mother liquor enter the iron oxide red product, the obtained ammonium chloride product is high in quality and low in metal ion impurity content, and the application environment range of ammonium chloride serving as a fertilizer is widened.

Description

technical field [0001] The invention relates to the technical field of chlorination titanium dioxide, in particular to a resource utilization method of chlorination waste residue. Background technique [0002] There are two main methods of producing titanium dioxide in the world: sulfuric acid method and chlorination method. Due to the advantages in environmental protection and product quality, the chlorination method has become the direction of industrial upgrading of the domestic titanium dioxide industry. Ebullient chlorination technology is the mainstream chlorination technology for the production of chlorination titanium dioxide and sponge titanium. Its main reaction process is to add titanium-rich materials, petroleum coke, and chlorine gas into the chlorination furnace according to the ratio. The chlorine gas is introduced from the bottom of the furnace. Under the temperature of , the above materials react chemically, and the main product is TiCl 4 , the obtained pr...

Claims

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Application Information

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IPC IPC(8): C01G49/06C01C1/16C05C3/00
CPCC01G49/06C01C1/164C05C3/00C01P2006/80
Inventor 罗云李露冯支斌
Owner YIBIN HAIFENG HERUI
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