Process for increasing complicated sulfurized-lead-zinc ore dressing recovery rate

A technology of sulfide ore, lead and zinc, applied in the field of green technology, can solve the problems of increasing collector consumption, increasing production cost, increasing environmental pollution, etc., and achieving obvious economic and social benefits.

Inactive Publication Date: 2007-04-11
青海西部矿业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of a large number of regulators further increases the consumption of collectors, resulting in the flotation phenomenon of "heavy pressure and heavy pull", which increases production costs and increases environmental pollution. When the raw ore changes, it is easy to appear "running Phenomena that are difficult to control, such as slots, affect the selection index

Method used

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  • Process for increasing complicated sulfurized-lead-zinc ore dressing recovery rate
  • Process for increasing complicated sulfurized-lead-zinc ore dressing recovery rate
  • Process for increasing complicated sulfurized-lead-zinc ore dressing recovery rate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The ore properties of the present embodiment 1 are: lead-zinc sulfide ore raw ore multi-element content (wt%): Pb 5.6, Zn6.61, S 21.27, Fe 16.97, Cu 0.02, As 0.33, Ca 3.49, Mg 0.49, SiO 2 18.6, Al 0.74, Ag 63.3g / t, Au 0.7g / t. Oxidation rate of ore is Pb5.75%, Zn6.99%. The main metal minerals in the ore are galena, sphalerite, pyrite, pyrrhotite, and a small amount of pyrotite, marcasite, chalcopyrite, arsenopyrite, chalcocite, copper blue, Tetrahedrite, limonite and argentite, natural silver and silver-gold ore; gangue minerals are mainly quartz, chlorite, sericite, calcite, and a small amount of gypsum, dolomite, siderite, muscovite and Clay minerals.

Embodiment 1

[0044] The technical process conditions for implementing Example 1 are: pulp pH 12.8, pulp potential -255mv, sorting process flow and medicament system as shown in Figure 3.

[0045] The comprehensive closed-circuit results of the laboratory of Example 1 are shown in Table 1.

[0046]

[0047] The test obtained lead concentrate contains Pb73.94%, Ag860.6g / t, lead and silver recoveries are 95.56% and 88.68%, zinc concentrate contains Zn51.65%, zinc recovery rate is 93.54%. Compared with the average index of the original process, the lead flotation recovery rate increased by 2.18 percentage points, the zinc concentrate grade increased by 2.25 percentage points, and the zinc recovery rate increased by 3.99 percentage points. The flotation process is simplified to only one lead roughing and one lead refining, and zinc only has one roughing, one refining and one sweeping.

Embodiment 2

[0049] The ore properties and mineral composition of Example 2 are the same as those of Example 1. The raw ore grade is: Pb 4.36-4.62%, Zn 5.71-5.97%, oxidation rate Pb 12.42%, Zn 8.62%.

[0050] The technical process conditions of this embodiment 2 are: pulp pH 12.3, potential -320mv, pharmaceutical system: DDTC 33g / t, terpene alcohol 50g / t, copper sulfate 450g / t, butyl xanthate 100g / t. The selection process is shown in Figure 4. The industrial test results are shown in Table 2.

[0051]

[0052] Compared with the same period of last year, the lead recovery rate of the technical process of the present invention in embodiment 2 was 1.83 percentage points higher, the main grade of the lead concentrate was increased by 5.42 percentage points, the zinc recovery rate was increased by 2.39 percentage points, and the lead-zinc concentrate mutual content was further reduced. The dosage of flotation agents is reduced by more than two-thirds of the lead collector, copper s...

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Abstract

The present invention is green process of recovering complicated lead-zinc sulfide ore in high recovering rate. The technological process adopts lime to form high alkalinity and maintain the original potential of lead-zinc sulfide slurry during ore grinding floatation, sodium diethyl dithioamino formate as the selective lead mineral collecting agent, copper sulfate as the sphalerite activating agent and butyl xanthate as the zinc mineral collecting agent for optimized successive fast floatation. The present invention has raised recovering rate, low chemical consumption, simple technological process and low production cost.

Description

technical field [0001] The invention relates to a process for improving the beneficiation and recovery index of complex lead-zinc sulfide ore, which belongs to the green technology process. Background technique [0002] With the rapid development of society and technology in our country, the demand for lead-zinc metal products is growing rapidly. In recent years, with the rapid expansion of lead-zinc smelting production capacity, the demand for lead-zinc concentrates has increased sharply, coupled with the serious indiscriminate mining and indiscriminate mining, the domestic lead-zinc mineral resource reserves have declined sharply, which is far from meeting the needs of economic development. At present, lead and zinc resources in eastern my country have been gradually exhausted, some large mines in Northeast China and North China have been closed one after another, large mines in South China have been developed for many years, and their reserves have also decreased signific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/004B03B1/00B03D101/02B03D103/02
Inventor 王淀佐林大泽阮仁满宋远胜李皊值张永德
Owner 青海西部矿业科技有限公司
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