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Production process for cogeneration of polymerization ferric chloride water purification agent by using potassium fluotitanate

A technology of polymerizing ferric chloride and potassium fluorotitanate, which is applied in the fields of iron halide, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of high cost of mother liquor treatment, low iron concentration in mother liquor water, and large loss of mother liquor, etc. Good social value and economic value, easy control of operating conditions, and simplified production process effect

Active Publication Date: 2013-03-06
福建省漳平市九鼎氟化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This treatment process consumes a large amount of lime and produces a large amount of iron-containing waste residue
[0003] In addition, the current method for producing potassium fluotitanate from hydrofluoric acid, ilmenite, and potassium chloride is to use clean water-soluble potassium chloride, the amount of mother liquor is large, the loss of mother liquor is large, and the concentration of iron in mother liquor water is low; the cost of mother liquor treatment is high, and the slag The amount is large and the treatment is difficult; other production costs of polyferric chloride are high and the process is complicated, so it is not suitable as a solution for potassium fluorotitanate wastewater treatment

Method used

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  • Production process for cogeneration of polymerization ferric chloride water purification agent by using potassium fluotitanate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This example uses the following raw materials

[0041] 1. Hydrofluoric acid containing HF 25.3%;

[0042] 2. Potassium chloride contains K 2 O 60.1%;

[0043] 3. Titanium ore (nFe 2 o 3 · mFeO · (3 / 2n+m) T iO 2 ) Contains Ti 29.5%, Fe34.8%, Fe 2 o 3 11.6%, FeO34.3%;

[0044] 4. Refined lime contains CaO73.3%;

[0045] 5. Hydrogen peroxide contains H 2 o 2 20%.

[0046] Specifically include the following steps:

[0047] (1) First add 3000Kg of hydrofluoric acid and 100Kg of potassium chloride into the leaching tank, start stirring, add 1080Kg of titanium ore, seal and continue to react for 2 hours, and the leaching temperature reaches 98°C;

[0048](2) Put the slurry qualified for leaching into the clarification tank with a pump, settle and remove impurities for 16 hours to obtain ferric fluorotitanate clear liquid, the temperature is 51°C;

[0049] (3) Potassium chloride 950 Kg is dissolved with 4000 Kg iron-containing potassium fluotitanate mother liquor ...

Embodiment 2

[0057] This example uses the following raw materials

[0058] 1. Hydrofluoric acid containing 33.2% HF;

[0059] 2. Potassium chloride contains K 2 O 60.1%;

[0060] 3. Titanium ore (nFe 2 o 3 · mFeO · (3 / 2n+m) T iO 2 ) Contains Ti 29.5%, Fe34.8%, Fe 2 o 3 11.6%, FeO34.3%;

[0061] 4. Refined lime contains CaO73.3%;

[0062] 5. Hydrogen peroxide contains H 2 o 2 20%;

[0063] 6. Sodium peroxide contains Na 2 o 2 92.5%.

[0064] Specifically include the following steps:

[0065] (1) First add 2260Kg of hydrofluoric acid and 100Kg of potassium chloride into the leaching tank, start stirring, add 1080Kg of titanium ore, seal and continue to react for 2 hours, and the leaching temperature reaches 100°C;

[0066] (2) Put the slurry qualified for leaching into the clarification tank with a pump, settle and remove impurities for 20 hours to obtain ferric fluorotitanate clear liquid, the temperature is 55°C;

[0067] (3) Potassium chloride 950 Kg is dissolved with 400...

Embodiment 3

[0075] This example uses the following raw materials

[0076] 1. Hydrofluoric acid containing 35.1% HF;

[0077] 2. Potassium chloride contains K 2 O 61.2%;

[0078] 3. Titanium ore (nFe 2 o 3 · mFeO · (3 / 2n+m) T iO 2 ) Contains Ti 30.5%, Fe33.6%, Fe 2 o 3 11.2%, FeO31.3%;

[0079] 4. Refined lime contains CaO73.3%;

[0080] 5. Hydrogen peroxide contains H 2 o 2 20%.

[0081] Specifically include the following steps:

[0082] (1) First add 2130Kg of hydrofluoric acid and 90Kg of potassium chloride into the leaching tank, start stirring, add 1050Kg of titanium ore, seal and continue to react for 2.5 hours, and the leaching temperature reaches 105°C;

[0083] (2) Put the slurry qualified for leaching into the clarification tank with a pump, settle and remove impurities for 8 hours to obtain ferric fluorotitanate clear liquid, the temperature is 58°C;

[0084] (3) Potassium chloride 950 Kg is dissolved with 4000 Kg iron-containing potassium fluotitanate mother liquo...

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Abstract

The invention discloses a production process for cogeneration of polymerization ferric chloride water purification agent by using potassium fluotitanate. The production process comprises the following steps: adding hydrofluoric acid and potassium chloride in a leaching tank; opening the leaching tank to stir; adding a theoretical amount of titanium ore; heating to 90-105 DEG C and leaching; sealing to react to obtain hexafluorotitanic acid iron slurry; settling the leached slurry to obtain a hexafluorotitanic acid iron clear liquid for later use; dissolving the potassium chloride by using a hexafluorotitanic acid potassium mother liquid; filtering to obtain a clear liquid for later use; adding metered potassium chloride liquid into a certain amount of hexafluorotitanic acid iron clear liquid while stirring; continually reacting and crystallizing to obtain the hexafluorotitanic acid potassium; carrying out solid-liquid separation on the hexafluorotitanic acid potassium slurry; washing the hexafluorotitanic acid potassium, wherein a part of wastewater enter the potassium chloride for dissolving and recycling; and the other part of wastewater enter an impurity-removing reaction tank; adding metered fine lime in the impurity-removing reaction tank; filter pressing and adding quantified oxidizing agent and stabilizing agent; and standing to obtain polymerization ferric chloride. With the adoption of the production process, the hexafluorotitanic acid potassium mother liquid is recycled, the concentration of the hexafluorotitanic acid potassium mother liquid is improved, and the impurities in the hexafluorotitanic acid potassium mother liquid are removed; and the ferric element is oxidized, alkalified, aged and polymerized to obtain the polymerization ferric chloride.

Description

technical field [0001] The invention relates to a technical method for producing inorganic fluoride salts and a water purifier, in particular to a production method for potassium fluotitanate and a polyferric chloride water purifier. Background technique [0002] Potassium fluorotitanate is mainly used as an additive in the manufacture of aluminum, titanium, and boron alloys, in aluminum processing and light metal smelting, and can also be used in catalysts for PP synthesis. important raw material. The domestic annual output of potassium fluorotitanate is about 20,000 tons, which produces about 100,000 tons of ferric chloride wastewater. The traditional treatment method is to add lime milk for neutralization, flocculation and sedimentation, and filter press to meet the discharge standards, and discharge about 120,000 tons of wastewater. This treatment process consumes a large amount of lime and produces a large amount of iron-containing waste residue. [0003] In additi...

Claims

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Application Information

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IPC IPC(8): C01G49/10C02F1/52
Inventor 喻鼎辉沈甫原
Owner 福建省漳平市九鼎氟化工有限公司
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