CN104263977A - Lime sulfur agent for treating mercury-containing waste residues and preparation method thereof - Google Patents
Lime sulfur agent for treating mercury-containing waste residues and preparation method thereof Download PDFInfo
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- CN104263977A CN104263977A CN201410489818.4A CN201410489818A CN104263977A CN 104263977 A CN104263977 A CN 104263977A CN 201410489818 A CN201410489818 A CN 201410489818A CN 104263977 A CN104263977 A CN 104263977A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to the technical field of treatment agents for mercury-containing waste residues, and in particular relates to a lime sulfur agent for treating the mercury-containing waste residues and a preparation method thereof. The preparation method comprises the following steps: appropriately proportioning quick lime, sulfur powder, water and sodium salt, combining with a preparation process of the lime sulfur agent, and controlling process parameters in process steps to ensure that a relatively optimal structure morphology can be formed among quick lime, the sulfur powder, the water and the sodium salt, so that the performance of the lime sulfur agent can be improved to a highest extent, a transformation capacity of the lime sulfur agent on elemental mercury or mercury salt can be improved, and the recovery rate of recycling mercury from the mercury-containing waste residues can be promoted; and moreover, combining with the control of addition sequences of quick lime, the water, the sulfur powder and the sodium salt to ensure that the structure performance of the lime sulfur agent is relatively excellent, the lime sulfur agent and elemental mercury or the mercury salt can be converted to the highest extent, mercury sulfide complex ions can be formed, and the development of the comprehensive utilization and mercury recycling industries of the mercury-containing waste residues can be promoted.
Description
Technical field
The present invention relates to waste slag containing mercury process treatment agent technical field, especially a kind of stone sulphur agent for waste slag containing mercury process and preparation method thereof.
Background technology
The agent of stone sulphur, a kind of lime and sulphur powder mixed preparing of adopting forms; In the prior art, the agent of stone sulphur is mainly applied to agriculture field, and mainly carry out with it insecticide carrying out being hybridly prepared into desinsection deinsectization with Bordeaux mixture at agriculture field, being usually emulsified state, is namely exactly emulsion.But the performance of stone sulphur agent has multiplicity, such as its display alkalescence, orientation can be carried out with part metals and generate coordination ion, by substance dissolves hard to tolerate in solution, especially react with Elemental Mercury or mercury salt, generation zunsober coordination ion.But the sight agent of stone sulphur being used for chemical field is also objective, can in the prior art, but not find the agent of stone sulphur to be used for chemical field, especially industrial chemicals, chemical sludge field of comprehensive utilization.
For this reason, this investigator is by Exploration & stu dy for many years, the novelty teabag of stone sulphur agent is carried out selecting and explores, and then the agent of stone sulphur is applied in the application of waste slag containing mercury extraction mercury, and by carrying out appropriate proportioning and combination to each raw material of stone sulphur agent, make to extract mercury from waste slag containing mercury, the rate of recovery of mercury is improved largely, and pass through raw material addition sequence, the treatment process parameter in stone sulphur agent process for preparation, further improve the performance of stone sulphur agent, for waste slag containing mercury reclaims the new selection that mercury industry provides a kind of transformation treating agent.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of stone sulphur agent for waste slag containing mercury process, can transform the Elemental Mercury in waste slag containing mercury or mercury salt, make the Elemental Mercury in waste slag containing mercury and mercury salt can have more than 97% be converted into zunsober coordination ion, and then make the Elemental Mercury of more than 97% or mercury salt be dissolved in solution, and then mercury is departed from waste slag containing mercury, for waste slag containing mercury further processes, the pollution reducing environment provides feasible technical scheme.
Simultaneously, the present invention also provides a kind of preparation method of the stone sulphur agent for waste slag containing mercury process, by controlling accurately the addition sequence of stone sulphur agent raw material and preparation technology parameter, and then make the agent of stone sulphur add in waste slag containing mercury, at utmost Elemental Mercury and mercury salt can be transformed, improve the rate of recovery of mercury in waste slag containing mercury.
Be achieved particular by following technical scheme:
For a stone sulphur agent for waste slag containing mercury process, its raw material composition (weight part) is unslaked lime 2-4 part, SULPHUR POWDER 1-3 part, water 9-11 part, sodium salt 0.5-0.7 part.
Described raw material composition (weight part) is unslaked lime 3 parts, SULPHUR POWDER 2 parts, 10 parts, water, sodium salt 0.6 part.
Described SULPHUR POWDER is 300-400 object powder.
Described SULPHUR POWDER is the sulfosalt powder that elemental sulfur powder accounts for 90-99%.
Described sodium salt is the combination of a kind of in sodium hydroxide, sodium-chlor, sodium lignosulfonate or two kinds.
Described sodium salt, when combining for sodium hydroxide and sodium lignosulfonate, both weight proportions are 1:(0.3-0.5); When mixing with sodium-chlor for sodium hydroxide, both weight proportions are 1:1; When mixing with sodium-chlor for sodium lignosulfonate, both weight ratios are (0.8-0.9): (1.1-1.3).
This is used for the preparation method of the stone sulphur agent of waste slag containing mercury process, according to above-mentioned ratio, water is placed in boiler, temperature is adopted to be after 70-90 DEG C of heat treatment 20-30min, add unslaked lime wherein again, and adopt agitator to stir with the stirring velocity of 50-90r/min, and control unslaked lime and added at 1-3h, to be added complete after, maintenance stirring velocity is constant, temperature is warming up to 300-400 DEG C at 20-30s, and at this moment, under isoperibol, SULPHUR POWDER is added in boiler, adopt the mode stirred while adding, the control joining day is 2-4h, after having added, continue stir process 30-70min, again by after its constant temperature process 10-30min, when being cooled to 60-70 DEG C with 3 DEG C/min, constant temperature process 20-30min, add sodium salt wherein again, and to control the sodium salt joining day be 10-15min, add fashionable, employing stirring speed is 70-90r/min stir process, after treating that sodium salt has added, after Keep agitation process 10-15min, again temperature is cooled to 15-25 DEG C at 20-30s, after constant temperature leaves standstill 30-50min, the stone sulphur agent for waste slag containing mercury process can be obtained.
Compared with prior art, technique effect of the present invention is embodied in:
1. by the appropriate proportioning of unslaked lime, SULPHUR POWDER, water, sodium salt, stone sulphur agent performance is improved, largely the Elemental Mercury in waste slag containing mercury and mercury salt can be converted into the zunsober coordination ion of solution state, and then a large amount of be dissolved in solution, when making solid-liquid separation, mercury and waste residue are separated, and then improves the rate of recovery of mercury.
2. by the preparation technology in conjunction with the agent of stone sulphur, and the processing parameter in processing step is controlled, make can form preferably structural form between unslaked lime, SULPHUR POWDER, water, sodium salt, and then farthest improve the performance of stone sulphur agent, improve the conversion capability of stone sulphur agent to Elemental Mercury and mercury salt, facilitate the rate of recovery that waste slag containing mercury reclaims mercury; And, in conjunction with the control of the addition sequence of unslaked lime, water, SULPHUR POWDER and sodium salt, and then ensure that the structure properties of stone sulphur agent is more excellent, the agent of stone sulphur and Elemental Mercury or mercury salt can farthest be transformed, form zunsober coordination ion, facilitate the development that mercury industry is reclaimed in waste slag containing mercury comprehensive utilization.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
For a stone sulphur agent for waste slag containing mercury process, its raw material is unslaked lime 2kg, SULPHUR POWDER 1kg, water 9kg, sodium salt 0.5kg.
Wherein, SULPHUR POWDER is 300 object powder, and SULPHUR POWDER is elemental sulfur powder account for 90% sulfosalt powder.
Sodium salt is sodium hydroxide.
This is used for the preparation method of the stone sulphur agent of waste slag containing mercury process, according to above-mentioned ratio, water is placed in boiler, temperature is adopted to be after 70 DEG C of heat treatment 20min, add unslaked lime wherein again, and adopt agitator to stir with the stirring velocity of 50r/min, and control unslaked lime and added at 1h, to be added complete after, maintenance stirring velocity is constant, temperature is warming up to 300 DEG C at 20s, and at this moment, under isoperibol, SULPHUR POWDER is added in boiler, adopt the mode stirred while adding, the control joining day is 2h, after having added, continue stir process 30min, again by after its constant temperature process 10min, when being cooled to 60 DEG C with 3 DEG C/min, constant temperature process 20min, add sodium salt wherein again, and to control the sodium salt joining day be 10min, add fashionable, employing stirring speed is 70r/min stir process, after treating that sodium salt has added, after Keep agitation process 10min, again temperature is cooled to 15 DEG C at 20s, after constant temperature leaves standstill 30min, the stone sulphur agent for waste slag containing mercury process can be obtained.
Embodiment 2
For a stone sulphur agent for waste slag containing mercury process, its raw material is unslaked lime 4kg, SULPHUR POWDER 3kg, water 11kg, sodium salt 0.7kg.
Wherein, SULPHUR POWDER is 400 object powder, and SULPHUR POWDER is elemental sulfur powder account for 99% sulfosalt powder.
Sodium salt is sodium lignosulfonate.
This is used for the preparation method of the stone sulphur agent of waste slag containing mercury process, according to above-mentioned ratio, water is placed in boiler, temperature is adopted to be after 90 DEG C of heat treatment 30min, add unslaked lime wherein again, and adopt agitator to stir with the stirring velocity of 90r/min, and control unslaked lime and added at 3h, to be added complete after, maintenance stirring velocity is constant, temperature is warming up to 400 DEG C at 30s, and at this moment, under isoperibol, SULPHUR POWDER is added in boiler, adopt the mode stirred while adding, the control joining day is 4h, after having added, continue stir process 70min, again by after its constant temperature process 30min, when being cooled to 70 DEG C with 3 DEG C/min, constant temperature process 30min, add sodium salt wherein again, and to control the sodium salt joining day be 15min, add fashionable, employing stirring speed is 90r/min stir process, after treating that sodium salt has added, after Keep agitation process 15min, again temperature is cooled to 25 DEG C at 30s, after constant temperature leaves standstill 50min, the stone sulphur agent for waste slag containing mercury process can be obtained.
Embodiment 3
For a stone sulphur agent for waste slag containing mercury process, its raw material is unslaked lime 3kg, SULPHUR POWDER 2kg, water 10kg, sodium salt 0.6kg.
Wherein, SULPHUR POWDER is 350 object powder, and SULPHUR POWDER is elemental sulfur powder account for 95% sulfosalt powder.
Sodium salt is sodium-chlor.
This is used for the preparation method of the stone sulphur agent of waste slag containing mercury process, according to above-mentioned ratio, water is placed in boiler, temperature is adopted to be after 80 DEG C of heat treatment 25min, add unslaked lime wherein again, and adopt agitator to stir with the stirring velocity of 70r/min, and control unslaked lime and added at 2h, to be added complete after, maintenance stirring velocity is constant, temperature is warming up to 350 DEG C at 25s, and at this moment, under isoperibol, SULPHUR POWDER is added in boiler, adopt the mode stirred while adding, the control joining day is 3h, after having added, continue stir process 50min, again by after its constant temperature process 20min, when being cooled to 65 DEG C with 3 DEG C/min, constant temperature process 25min, add sodium salt wherein again, and to control the sodium salt joining day be 13min, add fashionable, employing stirring speed is 80r/min stir process, after treating that sodium salt has added, after Keep agitation process 12min, again temperature is cooled to 20 DEG C at 25s, after constant temperature leaves standstill 40min, the stone sulphur agent for waste slag containing mercury process can be obtained.
Embodiment 4
On the basis of embodiment 1, described sodium salt is sodium hydroxide and sodium lignosulfonate mixture, and both weight proportions are 1:0.3, and other steps are with embodiment 1.
Embodiment 5
On the basis of embodiment 2, described sodium salt is sodium hydroxide and sodium lignosulfonate mixture, and both weight proportions are 1:0.5, and other steps are with embodiment 2.
Embodiment 6
On the basis of embodiment 3, described sodium salt is sodium hydroxide and sodium lignosulfonate mixture, and both weight proportions are 1:0.4, and other steps are with embodiment 3.
Embodiment 7
On the basis of embodiment 1, described sodium salt is sodium hydroxide and sodium chloride mixture, and both weight proportions are 1:1, and other steps are with embodiment 1.
Embodiment 8
On the basis of embodiment 2, described sodium salt is the mixture of sodium lignosulfonate and sodium-chlor, and both weight ratios are 0.8:1.1, and other steps are with embodiment 2.
Embodiment 9
On the basis of embodiment 1, described sodium salt is the mixture of sodium lignosulfonate and sodium-chlor, and both weight ratios are 0.8:1.3, and other steps are with embodiment 1.
Embodiment 10
On the basis of embodiment 3, described sodium salt is the mixture of sodium lignosulfonate and sodium-chlor, and both weight ratios are 0.9:1.1, and other steps are with embodiment 3.
It is important to point out at this; above embodiment is only limitted to be further elaborated technical scheme of the present invention and understand explanation; be not to further restriction of the present invention; the essential characteristics of the non-protruding that those skilled in the art make on this basis and the improvement of non-significant progress, all belong to protection category of the present invention.
Claims (7)
1. for a stone sulphur agent for waste slag containing mercury process, it is characterized in that, its raw material composition (weight part) be unslaked lime 2-4 part, SULPHUR POWDER 1-3 part, water 9-11 part, sodium salt 0.5-0.7 part.
2., as claimed in claim 1 for the stone sulphur agent of waste slag containing mercury process, it is characterized in that, described raw material composition (weight part) is unslaked lime 3 parts, SULPHUR POWDER 2 parts, 10 parts, water, sodium salt 0.6 part.
3., as claimed in claim 1 for the stone sulphur agent of waste slag containing mercury process, it is characterized in that, described SULPHUR POWDER is 300-400 object powder.
4., as claimed in claim 1 for the stone sulphur agent of waste slag containing mercury process, it is characterized in that, described SULPHUR POWDER is the sulfosalt powder that elemental sulfur powder accounts for 90-99%.
5. as claimed in claim 1 for the stone sulphur agent of waste slag containing mercury process, it is characterized in that, described sodium salt is the combination of a kind of in sodium hydroxide, sodium-chlor, sodium lignosulfonate or two kinds.
6. as claimed in claim 5 for the stone sulphur agent of waste slag containing mercury process, it is characterized in that, described sodium salt, when combining for sodium hydroxide and sodium lignosulfonate, both weight proportions are 1:(0.3-0.5); When mixing with sodium-chlor for sodium hydroxide, both weight proportions are 1:1; When mixing with sodium-chlor for sodium lignosulfonate, both weight ratios are (0.8-0.9): (1.1-1.3).
7. the preparation method of the stone sulphur agent for waste slag containing mercury process as described in any one of claim 1-6, it is characterized in that, according to above-mentioned ratio, water is placed in boiler, temperature is adopted to be after 70-90 DEG C of heat treatment 20-30min, add unslaked lime wherein again, and adopt agitator to stir with the stirring velocity of 50-90r/min, and control unslaked lime and added at 1-3h, to be added complete after, maintenance stirring velocity is constant, temperature is warming up to 300-400 DEG C at 20-30s, and at this moment, under isoperibol, SULPHUR POWDER is added in boiler, adopt the mode stirred while adding, the control joining day is 2-4h, after having added, continue stir process 30-70min, again by after its constant temperature process 10-30min, when being cooled to 60-70 DEG C with 3 DEG C/min, constant temperature process 20-30min, add sodium salt wherein again, and to control the sodium salt joining day be 10-15min, add fashionable, employing stirring speed is 70-90r/min stir process, after treating that sodium salt has added, after Keep agitation process 10-15min, again temperature is cooled to 15-25 DEG C at 20-30s, after constant temperature leaves standstill 30-50min, the stone sulphur agent for waste slag containing mercury process can be obtained.
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| CN201410489818.4A CN104263977B (en) | 2014-09-23 | 2014-09-23 | A kind of stone sulfur agent for waste slag containing mercury process and preparation method thereof |
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| CN201410489818.4A CN104263977B (en) | 2014-09-23 | 2014-09-23 | A kind of stone sulfur agent for waste slag containing mercury process and preparation method thereof |
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| CN104263977B CN104263977B (en) | 2016-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843925A (en) * | 2015-05-19 | 2015-08-19 | 铜仁市万山区盛和矿业有限责任公司 | Joint treatment method for sludge and sewage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856607A (en) * | 2010-06-04 | 2010-10-13 | 重庆大学 | Flue gas demercuration adsorbent |
| CN103243222A (en) * | 2013-04-24 | 2013-08-14 | 中南大学 | Modified lime sulphur and application thereof in gold leaching technology |
| CN103285711A (en) * | 2013-05-28 | 2013-09-11 | 中南大学 | Method for purifying and recovering mercury in off gas |
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- 2014-09-23 CN CN201410489818.4A patent/CN104263977B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856607A (en) * | 2010-06-04 | 2010-10-13 | 重庆大学 | Flue gas demercuration adsorbent |
| CN103243222A (en) * | 2013-04-24 | 2013-08-14 | 中南大学 | Modified lime sulphur and application thereof in gold leaching technology |
| CN103285711A (en) * | 2013-05-28 | 2013-09-11 | 中南大学 | Method for purifying and recovering mercury in off gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843925A (en) * | 2015-05-19 | 2015-08-19 | 铜仁市万山区盛和矿业有限责任公司 | Joint treatment method for sludge and sewage |
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