CN100369821C - Method for producing polyiron sulfate using sulfur burning iron sand - Google Patents
Method for producing polyiron sulfate using sulfur burning iron sand Download PDFInfo
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- CN100369821C CN100369821C CNB2006100216266A CN200610021626A CN100369821C CN 100369821 C CN100369821 C CN 100369821C CN B2006100216266 A CNB2006100216266 A CN B2006100216266A CN 200610021626 A CN200610021626 A CN 200610021626A CN 100369821 C CN100369821 C CN 100369821C
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- ferric sulfate
- bodied ferric
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- iron sand
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Abstract
The process of producing iron sulfate polymer with waste roasted pyrite slag from sulfuric acid production as main material includes the reaction between waste roasted pyrite slag and sulfuric acid, oxidation with oxidant, direct polymerization to obtain liquid iron sulfate polymer and drying to obtain the iron sulfate polymer product. The present invention utilizes the waste and has simple technological process, low power consumption and low cost, and the product is used as water purifying agent mainly for coagulating sedimentation and has excellent purifying effect on pH 7-9 water.
Description
Technical field
The invention provides a kind of preparation method of poly-ferric sulfate, particularly relate to a kind of method of utilizing sulfur burning iron sand to produce bodied ferric sulfate.
Background technology
Bodied ferric sulfate has been widely used in water treatment as water purification agent, mainly plays coagulation, quickens the precipitation of solid matter in the water.At present, the main raw material of producing bodied ferric sulfate is a ferrous sulfate, needs for two steps carried out, and at first reaction generates Z 250, and reaction generates bodied ferric sulfate again.This method is produced needs Boiler Steam, autoclave etc., and equipment is many, complex process, and complicated operation, energy consumption is big, raw materials cost height, production cost height.
Summary of the invention
The objective of the invention is to overcome above-mentioned shortcoming, provide a kind of waste residue that utilizes to be raw material, technology is simple, and is easy to operate, and cost is low, and the energy-conservation sulfur burning iron sand that utilizes is produced the method for bodied ferric sulfate.
The present invention utilizes sulfur burning iron sand to produce the method for bodied ferric sulfate, and its step is as follows:
1) add entry in the reactive polymeric pond, its amount of water is 0.3～0.5 times of product bodied ferric sulfate weight;
2) Xiang Shuizhong adds the vitriol oil, and its add-on is 1.1～1.4 times of product bodied ferric sulfate weight, stirs 5～10 minutes;
3) add sulfur burning iron sand again in the reactive polymeric pond, its add-on is 1.2～1.45 times of product bodied ferric sulfate weight, mixes, and reacts 5～10 minutes, and temperature rises to 120～130 ℃, naturally cooling;
When 4) temperature in the question response polymeric pool is reduced to 60～90 ℃, add oxygenant, the oxygenant add-on is 0.03～0.045 times of product bodied ferric sulfate weight; Mixed 40～70 minutes, and generated bodied ferric sulfate sorrel liquid;
5) cooling, post precipitation extracts clear liquid, and is dry under 200～300 ℃ of temperature, generally adopts forced air drying and rolls the Tong drying, gets product solid-state polymerization ferric sulfate at last.
Wherein, the desulfurization iron sand is the waste residue after sulfurous iron ore is produced sulfuric acid, after washing and magnetic separation, iron-holder is 50～60%, and main component is a Z 250, contains a small amount of ferric oxide; The concentration expressed in percentage by weight of the used vitriol oil is 96～98%; Oxygenant is the mixture of muriate and oxymuriate, and its cooperation ratio is muriate by weight: oxymuriate=1: 3～5.Muriate is one or both in Repone K, the sodium-chlor; Oxymuriate is one or both in Potcrate, the sodium chlorate.
The present invention utilizes sulfur burning iron sand to produce the method for bodied ferric sulfate, and its advantage is to utilize waste residue, reduces vitriol works's waste sludge discharge, economizes on resources, and technology is simple, and is easy to operate, and equipment is few, and cost is low, less investment, but continuous production.Product polyaluminum sulfate weight of iron meets national standard, mainly as water purification agent, plays coagulation, and the wastewater sedimentation that is particularly suitable for PH7～9 is handled.
Embodiment
Embodiment 1: by producing 1 ton of bodied ferric sulfate, its operation steps is as follows:
1) in the reactive polymeric pond, adds 300 kg of water
2) Xiang Shuizhong adds 1100 kilograms of 96% vitriol oils, stirs 5 minutes;
3) add 1200 kilograms of sulfur burning iron sands again in the reactive polymeric pond, mix, reacted 5 minutes, temperature rises to 120 ℃, naturally cooling;
When 4) temperature in the question response polymeric pool is reduced to 60 ℃, add 30 kilograms of oxygenants, mixed 40 minutes, generate bodied ferric sulfate sorrel liquid.Wherein the prescription of oxygenant is a Repone K: sodium chlorate=1: 3;
5) cooling, post precipitation extracts clear liquid, and is dry under 200 ℃ of temperature, gets product solid-state polymerization ferric sulfate at last.Its performance index are as shown in table 1.
Embodiment 2: by producing 1 ton of bodied ferric sulfate, its operation steps is as follows:
1) in the reactive polymeric pond, adds 400 kg of water
2) Xiang Shuizhong adds 1250 kilograms of 98% vitriol oils, stirs 7 minutes;
3) add 1300 kilograms of sulfur burning iron sands again in the reactive polymeric pond, mix, reacted 8 minutes, temperature rises to 125 ℃, naturally cooling;
When 4) temperature in the question response polymeric pool is reduced to 75 ℃, add 40 kilograms of oxygenants, mixed 55 minutes, generate bodied ferric sulfate sorrel liquid.Wherein the prescription of oxygenant is a Repone K: oxymuriate (sodium chlorate+Potcrate)=1: 4, wherein sodium chlorate and Potcrate respectively account for 50% of oxymuriate weight.
5) cooling, post precipitation extracts clear liquid, and is dry under 250 ℃ of temperature, gets product solid-state polymerization ferric sulfate at last.Its performance index are as shown in table 1.
Embodiment 3: by producing 1 ton of bodied ferric sulfate, its operation steps is as follows:
1) in the reactive polymeric pond, adds 500 kg of water
2) Xiang Shuizhong adds 1400 kilograms of 96% vitriol oils, stirs 10 minutes;
3) add 1450 kilograms of sulfur burning iron sands again in the reactive polymeric pond, mix, reacted 10 minutes, temperature rises to 130 ℃, and order is so lowered the temperature;
When 4) temperature in the question response polymeric pool is reduced to 90 ℃, add 45 kilograms of oxygenants, mixed 70 minutes, generate bodied ferric sulfate sorrel liquid.Wherein the prescription of oxygenant is muriate (Repone K+sodium-chlor): Potcrate=1: 5, wherein, Repone K and sodium-chlor respectively account for 50% of muriate weight.
5) cooling, post precipitation extracts clear liquid, and is dry under 300 ℃ of temperature, gets product solid-state polymerization ferric sulfate at last.Its performance index are as shown in table 1.
Table 1: product bodied ferric sulfate quality examination result:
| Project | Unit | Measurement result | Standard value | ||
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |||
| All iron content | ％ | 19.2 | 19.5 | 20.5 | ≥18.5 |
| Reducing substances content | (with Fe +2Meter) % | ＜0.10 | ＜0.10 | ＜0.10 | ≤0.15 |
| Basicity | ％ | 9.40 | 9.20 | 9.50 | 9.0～14.0 |
| PH | (1% aqueous solution) | 2.49 | 2.85 | 2.92 | 2.0～3.0 |
| Arsenic | ％ | ＜0.0005 | ＜0.0005 | ＜0.0005 | ≤0.0008 |
| Plumbous | ％ | ＜0.0010 | ＜0.0010 | ＜0.0010 | ≤0.0015 |
| Insolubles content | ％ | 0.20 | 0.25 | 0.30 | ≤0.50 |
Claims (3)
1. method of utilizing sulfur burning iron sand to produce bodied ferric sulfate is characterized in that step is as follows:
1) add entry in the reactive polymeric pond, its amount of water is 0.3～0.5 times of a product bodied ferric sulfate weight;
2) Xiang Shuizhong adds the vitriol oil, and its add-on is 1.1～1.4 times of product bodied ferric sulfate weight, stirs 5～10 minutes;
3) add sulfur burning iron sand again in the reactive polymeric pond, its add-on is 1.2～1.45 times of product bodied ferric sulfate weight, mixes, and reacts 5～10 minutes, and temperature rises to 120～130 ℃, naturally cooling;
When 4) temperature in the question response polymeric pool is reduced to 60～90 ℃, add oxygenant, the oxygenant add-on is 0.03～0.045 times of product bodied ferric sulfate weight, mixes 40～70 minutes, generates bodied ferric sulfate sorrel liquid;
5) cooling, post precipitation extracts clear liquid, and is dry under 200～300 ℃ of temperature, gets product solid-state polymerization ferric sulfate;
Wherein, sulphur burning iron sand is the waste residue after sulfurous iron ore is produced sulfuric acid, after washing and magnetic separation, iron-holder is 50～60%, and oxygenant is the mixture of muriate and oxymuriate, and its cooperation ratio is muriate by weight: oxymuriate=1: 3～5.
2. the method for utilizing sulfur burning iron sand to produce bodied ferric sulfate as claimed in claim 1, the concentration expressed in percentage by weight that it is characterized in that the vitriol oil is 96～98%.
3. the method for utilizing sulfur burning iron sand to produce bodied ferric sulfate as claimed in claim 1 is characterized in that muriate is one or both in Repone K, the sodium-chlor; Oxymuriate is one or both in Potcrate, the sodium chlorate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100216266A CN100369821C (en) | 2006-08-21 | 2006-08-21 | Method for producing polyiron sulfate using sulfur burning iron sand |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100216266A CN100369821C (en) | 2006-08-21 | 2006-08-21 | Method for producing polyiron sulfate using sulfur burning iron sand |
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| CN1911817A CN1911817A (en) | 2007-02-14 |
| CN100369821C true CN100369821C (en) | 2008-02-20 |
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| CNB2006100216266A Expired - Fee Related CN100369821C (en) | 2006-08-21 | 2006-08-21 | Method for producing polyiron sulfate using sulfur burning iron sand |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049487A (en) * | 1990-09-24 | 1991-02-27 | 吴玢 | Method for making polymerized ferric sulfate |
| CN1709800A (en) * | 2004-06-18 | 2005-12-21 | 郑雅杰 | Method for preparing polymerized ferric sulfate from ferric sulfate solution |
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2006
- 2006-08-21 CN CNB2006100216266A patent/CN100369821C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049487A (en) * | 1990-09-24 | 1991-02-27 | 吴玢 | Method for making polymerized ferric sulfate |
| CN1709800A (en) * | 2004-06-18 | 2005-12-21 | 郑雅杰 | Method for preparing polymerized ferric sulfate from ferric sulfate solution |
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| CN1911817A (en) | 2007-02-14 |
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