CN103433120A - Heavy-floating joint separation method for producing high-grade sulfur concentrate - Google Patents
Heavy-floating joint separation method for producing high-grade sulfur concentrate Download PDFInfo
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Abstract
The invention relates to a heavy-floating joint separation method for producing high-grade sulfur concentrate. According to the technical scheme of the heavy-floating joint separation method, two times of roughing separation and two times of scavenging separation are carried out on lead and zinc flotation tailings after the lead and zinc flotation tailings are concentrated and acid is added in the lead and zinc flotation tailings, obtained roughing separation concentrate enters a rotational flow device, and then heavy separation is carried out on the roughing separation concentrate; set sand and overflow are obtained through the heavy separation, the sulfur grade of the set sand is higher than 47%, the sulfur grade of the overflow after two times of refined separation is higher than 47%, and the high-grade sulfur concentrate is obtained after the set sand and the refined separation concentrate are mixed. According to the heavy-floating joint separation method, the roughing separation-heavy separation through the rotational flow device-refined separation technological process is adopted, partial coarse-particle sulfur concentrate is preferentially separated out, feeding materials with the qualified dissociation degree are provided for the followed floating separation, the fine-particle high-grade sulfur concentrate is obtained, the coarse-particle sulfur concentrate and the fine-particle sulfur concentrate are filtered in a mixed mode, the problem that the concentrate filtering is difficult is solved, the technological process is simplified, the production cost is reduced, and the using rate of ferrous sulfide resources is improved. Therefore, the heavy-floating joint separation method has the advantages of being low in cost, simple in technological process and high in resource using rate, and the produced sulfur concentrate is high in grade.
Description
Technical field
The invention belongs to the technical field that highgrade pyrite concentrate is produced, be specifically related to a kind of weight for the production of highgrade pyrite concentrate-floating combined sorting method.
Background technology
Pyrite is the sulphur resource, is again iron resource, obtains the sulphur concentrate in its assorting room.The sulphur concentrate is the important source material of producing sulfuric acid, will produce another kind of byproduct in the relieving haperacidity process, i.e. the iron content sulfate slag, the grade of sulphur concentrate is lower, and the iron-holder of sulfate slag is also just lower, due to mineral complexity after roasting, be difficult to sub-elect high-grade iron ore concentrate, so its value is very low.Such as, the sulphur concentrate that the sulphur grade is 38%, after relieving haperacidity, in sulfate slag, the grade of iron is approximately 48%, and this raw material is difficult to the sorting iron ore concentrate that grade is greater than 60% that taps a blast furnace, so its purposes is greatly limited.If improve as far as possible the sulphur grade of sulphur concentrate in the pyritous process of sorting, make it to reach more than 47%, after the relieving haperacidity of sulphur concentrate, the iron grade of sulfate slag will reach more than 60%, similar to the iron concentrate grade of market sale, can be directly as iron-smelting raw material.Two kinds of resources of sulphur and iron will all be utilized, and this is for the very great meaning of utilization rate tool of improving resource.
Current, sort pyritous major technique and comprise: bulk flotation method, single gravity concentration method, heavy-floating combined sorting.The method of tradition On Pyrite is the bulk flotation method, and the bulk flotation method can effectively reclaim the sulphur resource, and, along with the development of technology, pyritous flotation technology also reaches its maturity.But a large amount of medicament used in floatation process, sort cost high on the one hand, and on the other hand to environment, and corrosive pipeline is serious.Therefore, many researchers propose to use reselecting method to be sorted, the characteristics larger with the quartzy density contrast that waits gangue mineral that are pyrite of this method utilization, gravitational separation equipment used has jigging machine and spiral classifier, jigging machine is applicable to that coarse grain sorts and screw machine is applicable to particulate and sorts, therefore usually pyrite will be divided into to some grades, sorted respectively, this has just caused the flow setting complexity.Same more use jigging machine and spiral classifier in existing heavy-floating combined process flow, and most gravitational separation equipment uses before all being placed on flotation operation, although can sorting pyrite, the gravity concentrate sulphur grade obtained is not high, can't be directly as the high-sulfur product.
Summary of the invention
The present invention is intended to overcome the prior art defect, and purpose is to provide the weight for the production of highgrade pyrite concentrate that a kind of production cost is low, technological process is simple and resource utilization is high-floating combined sorting method, and the sulphur concentrate grade of producing by the method is high.
For achieving the above object, the technical solution adopted in the present invention is: the processing step that it is characterized in that described heavy-floating combined sorting method is:
The first step, concentrated acid adding
Plumbous zinc flotation tailing is concentrated through thickening pond, that to obtain concentration be 48～53% thickening pond underflow, then add the concentrated sulfuric acid in the thickening pond underflow, adjust pH value to 6.5 ~ 7, obtain selecting sulphur to ore deposit.
Second step, roughly select for twice
The described sulphur that must select is carried out roughly selecting for twice to ore deposit: the confection that to roughly select one collecting agent be ethyl xanthogenate and butyl xanthate, wherein, the ethyl xanthogenate consumption is 110～130g/t, the butyl xanthate consumption is 30～50g/t; Roughly selecting one foaming agent is 2# oil, and consumption is 60～75g/t, and flotation time is 12～17min; Roughly select a mine tailing and enter and roughly select two, roughly selecting two collecting agent is ethyl xanthogenate, and consumption is 25～35g/t, and flotation time is 14～20min; Roughly select a concentrate and roughly select after two concentrate mix to be called and roughly select concentrate, roughly selecting concentrate and feed the 4th step, roughly selecting two mine tailings and enter the 3rd step.
The 3rd step, scan for twice
Roughly selecting two mine tailings enters twice and scan: scanning one collecting agent is butyl xanthate, and consumption is 25～35g/t, and scanning one foaming agent is 2# oil, and consumption is 5～10g/t, and flotation time is 8～11min; Scan a concentrate and return and roughly select two in second step, scan a mine tailing and enter and scan two, scanning two collecting agent is butyl xanthate, and consumption is 10～20g/t, and flotation time is 12～15min; Scan two concentrate and return and scan one, scan two mine tailings and deliver to Tailings Dam.
The 4th step, cyclone gravity treatment
The described concentrate of roughly selecting of step 2 feeds the cyclone gravity treatment: the feed force of cyclone is 0.06～0.09MPa, and feed ore concentration is 45～55%, obtains two kinds of products of sand setting and overflow; Wherein, sand setting is sent to the thickening pond in the 6th step, and overflow enters the 5th step.
The 5th step, twice are selected
The overflow that the cyclone gravity treatment obtains enter twice selected: selected one collecting agent is ethyl xanthogenate, and consumption is 80～120g/t, and selected one foaming agent is 2# oil, and consumption is 5～10g/t, and flotation time is 10～18min; It is selected two that a selected concentrate enters, and a selected mine tailing returns to the thickening pond in the first step, and selected two collecting agent is ethyl xanthogenate, and consumption is 40～60g/t, and flotation time is 10～25min; It is selected one that selected two mine tailings return, and selected two concentrate enter the thickening pond in the 6th step.
The 6th step, hybrid filtering
Selected two concentrate that the sand setting that the 4th step is obtained and the 5th step obtain mix, and through thickening pond, concentrated and filter dehydration, obtain highgrade pyrite concentrate.
Described plumbous zinc flotation tailing: sulfur content is 27 ~ 30%, and iron content is 25～28%.
It is 0.1～0.12 times of cyclone diameter that the sand setting of described cyclone is chewed diameter, and the overfall tube diameter of cyclone is 1.5～1.88 times that sand setting is chewed diameter.
Owing to adopting technique scheme, the present invention compared with prior art has following good effect and is:
The present invention adopts roughly select-cyclone gravity treatment-selected technological process sequentially to carry out, and at first uses method for floating to be roughly selected plumbous zinc flotation tailing, and the concentrate sulphur grade of roughly selecting obtained is 42～44%; Re-use cyclone it is carried out to gravity treatment, obtaining sand setting is the coarse granule highgrade pyrite concentrate, and overflow is through the selected fine grained high-sulfur concentrate that obtains, and both hybrid filterings, solved concentrate and filtered difficult problem, effectively reduces production cost.
The present invention has also played the effect of classification when adopting the sorting of gravity treatment cyclone, preferentially sub-elect coarse granule high-sulfur concentrate, also obtain-40 μ m and account for the overflow more than 85% simultaneously, fine size and degree of dissociation are high, for obtaining highgrade pyrite concentrate, next step flotation provides necessary condition, than multiple flotation, greatly simplified technological process.
The present invention is the highgrade pyrite concentrate of sulphur grade more than 47% by hydrocyclone sand and the selected concentrate mixing of overflow, has improved greatly the rate of recovery of sulphur; In addition, along with the raising of sulphur grade, the corresponding raising of iron grade meeting in concentrate, the sulfate slag after relieving haperacidity is directly used as iron ore concentrate, makes the sulphur iron resource all obtain effective utilization.
Therefore, the present invention has the advantages that production cost is low, technological process is simple and resource utilization is high, and the sulphur concentrate grade of producing is high.
The accompanying drawing explanation
Fig. 1 is technological process block diagram of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is further described, is not the restriction to its protection domain:
For avoiding repetition, first the relevant technologies improve parameter unification of the Pb-Zn tailings in this specific embodiment and cyclone is described below, in embodiment, repeat no more.
In described Pb-Zn tailings, sulfur content is 27 ~ 30%; Iron content is 25～28%.
It is 0.1～0.12 times of cyclone diameter that the sand setting of described cyclone is chewed diameter, and the overfall tube diameter of cyclone is 1.5～1.88 times that sand setting is chewed diameter.
embodiment 1
A kind of weight for the production of highgrade pyrite concentrate-floating combined sorting method.The processing step of described heavy-floating combined sorting method is as shown in Figure 1:
The first step, concentrated acid adding
Plumbous zinc flotation tailing is concentrated through thickening pond, that to obtain concentration be 48～51% thickening pond underflow, then add the concentrated sulfuric acid in the thickening pond underflow, adjust pH value to 6.5 ~ 7, obtain selecting sulphur to ore deposit.
Second step, roughly select for twice
The described sulphur that must select is carried out roughly selecting for twice to ore deposit: the confection that to roughly select one collecting agent be ethyl xanthogenate and butyl xanthate, wherein, the ethyl xanthogenate consumption is 110～120g/t, the butyl xanthate consumption is 30～40g/t; Roughly selecting one foaming agent is 2# oil, and consumption is 60～70g/t, and flotation time is 12～15min; Roughly select a mine tailing and enter and roughly select two, roughly selecting two collecting agent is ethyl xanthogenate, and consumption is 25～30g/t, and flotation time is 14～18min; Roughly select a concentrate and roughly select after two concentrate mix to be called and roughly select concentrate, roughly selecting concentrate and feed the 4th step, roughly selecting two mine tailings and enter the 3rd step.
The 3rd step, scan for twice
Roughly selecting two mine tailings enters twice and scan: scanning one collecting agent is butyl xanthate, and consumption is 25～30g/t, and scanning one foaming agent is 2# oil, and consumption is 5～10g/t, and flotation time is 8～11min; Scan a concentrate and return and roughly select two in second step, scan a mine tailing and enter and scan two, scanning two collecting agent is butyl xanthate, and consumption is 10～15g/t, and flotation time is 12～15min; Scan two concentrate and return and scan one, scan two mine tailings and deliver to Tailings Dam.
The 4th step, cyclone gravity treatment
The described concentrate of roughly selecting of step 2 feeds the cyclone gravity treatment: the feed force of cyclone is 0.06～0.08MPa, and feed ore concentration is 45～50%, obtains two kinds of products of sand setting and overflow; Wherein, sand setting is sent to the thickening pond in the 6th step, and overflow enters the 5th step.
The 5th step, twice are selected
The overflow that the cyclone gravity treatment obtains enter twice selected: selected one collecting agent is ethyl xanthogenate, and consumption is 80～100g/t, and selected one foaming agent is 2# oil, and consumption is 5～10g/t, and flotation time is 10～16min; It is selected two that a selected concentrate enters, and a selected mine tailing returns to the thickening pond in the first step, and selected two collecting agent is ethyl xanthogenate, and consumption is 40～50g/t, and flotation time is 10～20min; It is selected one that selected two mine tailings return, and selected two concentrate enter the thickening pond in the 6th step.
The 6th step, hybrid filtering
Selected two concentrate that the sand setting that the 4th step is obtained and the 5th step obtain mix, and through thickening pond, concentrated and filter dehydration, obtain highgrade pyrite concentrate.
embodiment 2
A kind of weight for the production of highgrade pyrite concentrate-floating combined sorting method.The processing step of described heavy-floating combined sorting method is as shown in Figure 1:
The first step, concentrated acid adding
Plumbous zinc flotation tailing is concentrated through thickening pond, that to obtain concentration be 50～53% thickening pond underflow, then add the concentrated sulfuric acid in the thickening pond underflow, adjust pH value to 6.5 ~ 7, obtain selecting sulphur to ore deposit.
Second step, roughly select for twice
The described sulphur that must select is carried out roughly selecting for twice to ore deposit: the confection that to roughly select one collecting agent be ethyl xanthogenate and butyl xanthate, wherein, the ethyl xanthogenate consumption is 120～130g/t, the butyl xanthate consumption is 40～50g/t; Roughly selecting one foaming agent is 2# oil, and consumption is 65～75g/t, and flotation time is 14～17min; Roughly select a mine tailing and enter and roughly select two, roughly selecting two collecting agent is ethyl xanthogenate, and consumption is 30～35g/t, and flotation time is 16～20min; Roughly select a concentrate and roughly select after two concentrate mix to be called and roughly select concentrate, roughly selecting concentrate and feed the 4th step, roughly selecting two mine tailings and enter the 3rd step.
The 3rd step, scan for twice
Roughly selecting two mine tailings enters twice and scan: scanning one collecting agent is butyl xanthate, and consumption is 30～35g/t, and scanning one foaming agent is 2# oil, and consumption is 5～10g/t, and flotation time is 8～11min; Scan a concentrate and return and roughly select two in second step, scan a mine tailing and enter and scan two, scanning two collecting agent is butyl xanthate, and consumption is 15～20g/t, and flotation time is 12～15min; Scan two concentrate and return and scan one, scan two mine tailings and deliver to Tailings Dam.
The 4th step, cyclone gravity treatment
The described concentrate of roughly selecting of step 2 feeds the cyclone gravity treatment: the feed force of cyclone is 0.07～0.09MPa, and feed ore concentration is 50～55%, obtains two kinds of products of sand setting and overflow; Wherein, sand setting is sent to the thickening pond in the 6th step, and overflow enters the 5th step.
The 5th step, twice are selected
The overflow that the cyclone gravity treatment obtains enter twice selected: selected one collecting agent is ethyl xanthogenate, and consumption is 100～120g/t, and selected one foaming agent is 2# oil, and consumption is 5～10g/t, and flotation time is 14～18min; It is selected two that a selected concentrate enters, and a selected mine tailing returns to the thickening pond in the first step, and selected two collecting agent is ethyl xanthogenate, and consumption is 50～60g/t, and flotation time is 15～25min; It is selected one that selected two mine tailings return, and selected two concentrate enter the thickening pond in the 6th step.
The 6th step, hybrid filtering
Selected two concentrate that the sand setting that the 4th step is obtained and the 5th step obtain mix, and through thickening pond, concentrated and filter dehydration, obtain highgrade pyrite concentrate.
Claims (3)
1. the weight for the production of highgrade pyrite concentrate-floating combined sorting method, it is characterized in that described heavy-processing step of floating combined sorting method is:
The first step, concentrated acid adding
Plumbous zinc flotation tailing is concentrated through thickening pond, and thickening pond underflow and thickening pond overflow that to obtain concentration be 48～53% add the concentrated sulfuric acid in the thickening pond underflow, adjust pH value to 6.5 ~ 7, obtain selecting sulphur to ore deposit;
Second step, roughly select for twice
The described sulphur that must select is carried out roughly selecting for twice to ore deposit: the confection that to roughly select one collecting agent be ethyl xanthogenate and butyl xanthate, wherein, the ethyl xanthogenate consumption is 110～130g/t, the butyl xanthate consumption is 30～50g/t; Roughly selecting one foaming agent is 2# oil, and consumption is 60～75g/t, and flotation time is 12～17min; Roughly select a mine tailing and enter and roughly select two, roughly selecting two collecting agent is ethyl xanthogenate, and consumption is 25～35g/t, and flotation time is 14～20min; Roughly select a concentrate and roughly select after two concentrate mix to be called and roughly select concentrate, roughly selecting concentrate and feed the 4th step, roughly selecting two mine tailings and enter the 3rd step;
The 3rd step, scan for twice
Roughly selecting two mine tailings enters twice and scan: scanning one collecting agent is butyl xanthate, and consumption is 25～35g/t, and scanning one foaming agent is 2# oil, and consumption is 5～10g/t, and flotation time is 8～11min; Scan a concentrate and return and roughly select two in second step, scan a mine tailing and enter and scan two, scanning two collecting agent is butyl xanthate, and consumption is 10～20g/t, and flotation time is 12～15min; Scan two concentrate and return and scan one, scan two mine tailings and deliver to Tailings Dam;
The 4th step, cyclone gravity treatment
The described concentrate of roughly selecting of step 2 feeds the cyclone gravity treatment: the feed force of cyclone is 0.06～0.09MPa, and feed ore concentration is 45～55%, obtains two kinds of products of sand setting and overflow; Wherein, sand setting is sent to the thickening pond in the 6th step, and overflow enters the 5th step;
The 5th step, twice are selected
The overflow that the cyclone gravity treatment obtains enter twice selected: selected one collecting agent is ethyl xanthogenate, and consumption is 80～120g/t, and selected one foaming agent is 2# oil, and consumption is 5～10g/t, and flotation time is 10～18min; It is selected two that a selected concentrate enters, and a selected mine tailing returns to the thickening pond in the first step, and selected two collecting agent is ethyl xanthogenate, and consumption is 40～60g/t, and flotation time is 10～25min; It is selected one that selected two mine tailings return, and selected two concentrate enter the thickening pond in the 6th step;
The 6th step, hybrid filtering
Selected two concentrate that the sand setting that the 4th step is obtained and the 5th step obtain mix, and through thickening pond, concentrated and filter dehydration, obtain highgrade pyrite concentrate.
2. the weight for the production of highgrade pyrite concentrate as claimed in claim 1-floating combined sorting method, it is characterized in that described plumbous zinc flotation tailing: sulfur content is 27 ~ 30%, iron content is 25～28%.
3. the weight for the production of highgrade pyrite concentrate as claimed in claim 1-floating combined sorting method, it is 0.1～0.12 times of cyclone diameter that the sand setting that it is characterized in that described cyclone is chewed diameter, and the overfall tube diameter of cyclone is 1.5～1.88 times that sand setting is chewed diameter.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772215A (en) * | 2016-05-09 | 2016-07-20 | 武汉科技大学 | Mineral processing method of separating sulfur concentrates from selected pyrite tailings |
| CN105964408A (en) * | 2015-11-02 | 2016-09-28 | 武汉科技大学 | Flotation method for recovering lead sulphate from lead-silver slag |
| CN106040420A (en) * | 2016-06-30 | 2016-10-26 | 云南澜沧铅矿有限公司 | Technology for recovering pyrite from flotation tailings of lead-zinc ore |
| CN108043588A (en) * | 2018-01-02 | 2018-05-18 | 中国恩菲工程技术有限公司 | The system of Call Provision iron concentrate from particulate iron tailings |
| CN110976067A (en) * | 2019-11-25 | 2020-04-10 | 金堆城钼业股份有限公司 | Process for dewatering concentrated sulfur pulp |
| CN112370862A (en) * | 2020-10-23 | 2021-02-19 | 长沙矿冶研究院有限责任公司 | Slurry shipborne dehydration method for ocean mining ship |
| CN114212911A (en) * | 2021-11-30 | 2022-03-22 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Tailing separation method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964408A (en) * | 2015-11-02 | 2016-09-28 | 武汉科技大学 | Flotation method for recovering lead sulphate from lead-silver slag |
| CN105772215A (en) * | 2016-05-09 | 2016-07-20 | 武汉科技大学 | Mineral processing method of separating sulfur concentrates from selected pyrite tailings |
| CN106040420A (en) * | 2016-06-30 | 2016-10-26 | 云南澜沧铅矿有限公司 | Technology for recovering pyrite from flotation tailings of lead-zinc ore |
| CN108043588A (en) * | 2018-01-02 | 2018-05-18 | 中国恩菲工程技术有限公司 | The system of Call Provision iron concentrate from particulate iron tailings |
| CN108043588B (en) * | 2018-01-02 | 2024-01-12 | 中国恩菲工程技术有限公司 | System for retrieve cobalt sulphur concentrate from fine particle iron tailings |
| CN110976067A (en) * | 2019-11-25 | 2020-04-10 | 金堆城钼业股份有限公司 | Process for dewatering concentrated sulfur pulp |
| CN112370862A (en) * | 2020-10-23 | 2021-02-19 | 长沙矿冶研究院有限责任公司 | Slurry shipborne dehydration method for ocean mining ship |
| CN114212911A (en) * | 2021-11-30 | 2022-03-22 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Tailing separation method |
| CN114212911B (en) * | 2021-11-30 | 2023-12-22 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Tailing separating method |
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Application publication date: 20131211 |