A system for recovering lead and silver from zinc-sulfur separation tailings

Abstract

The utility model discloses a system for recovering lead and silver in zinc-sulfur separation tailings. The concentrate outlet of a zinc-sulfur separation flotation machine is connected with a feed port of a zinc concentration flotation machine, the tailing outlet of the zinc-sulfur separation flotation machine is connected with a feed port of a zinc scavenging flotation machine, the tailing outlet of the zinc scavenging flotation machine is connected with a feed port of an inclined plate thickener; the liquid discharge port of the inclined plate thickener is connected with a water inlet of a return water system, the ore discharge port of the inclined plate thickener is connected with a feed port of a lead roughing flotation machine, the lead roughing flotation machine is connected with a discharge port of a sulfide ore powder ore bin, the tailing outlet of the lead roughing flotation machine is connected with a feed port of the lead scavenging flotation machine; the concentrate outlet of the zinc concentration flotation machine and the tailing outlet of the lead scavenging flotation machine are connected with a feed port of a zinc roughing ore selection system. After dehydration, the tailings from the zinc-sulfur separation of oxide ore are mixed with sulfide ore powder for lead selection. This can effectively recover the lead, zinc and silver in the tailings from the zinc-sulfur separation of oxide ore without affecting the recovery effect of the original sulfide ore system.

Description

Technical field:

[0001] The utility model relates to the field of lead-zinc ore dressing, in particular to a system for recovering lead and silver in zinc-sulfur separation tailings. Background technology:

[0002] Among the ores of lead-zinc mines, sulfide ores are the main ones, and some oxide ores are mixed in them. In the process of oxide ore beneficiation, the sulfide ores will be selected first, and then the oxide ore will be sorted. When separating zinc and sulfur from oxide ore, due to the low flotation concentration, lime will be added to desulfurize and remove impurities in order to improve the grade of zinc concentrate. A large amount of gangue, pyrite and other conjoined bodies are suppressed into the zinc-sulfur separation tailings, which contain 1.0-2.0% lead, 2-5% zinc, and 200-400g / t silver. The metal loss is high. Due to the high zinc content, this part of the middlings will be sent to the sulfide zinc flotation system, resulting in an increase in the lead and silver content of the zinc concentrate, affecting the grade of the zinc concentrate, and the lead and silver cannot be effectively recovered. Utility model content:

[0003] The utility model aims to provide a system for recovering lead and silver in zinc-sulfur separation tailings.

[0004] The utility model is implemented by the following technical solutions:

[0005] A system for recovering lead and silver in zinc-sulfur separation tailings, comprising a zinc-sulfur flotation machine, wherein the feed port of the zinc-sulfur flotation machine is connected to the tailings outlet of a lead sulfide roughing system, the concentrate outlet of the zinc-sulfur flotation machine is connected to the feed port of a zinc-sulfur concentration flotation machine, the tailings outlet of the zinc-sulfur flotation machine is connected to the feed port of a zinc-sulfur scavenging flotation machine, the concentrate outlet of the zinc-sulfur concentration flotation machine is connected to the feed port of a zinc-sulfur separation flotation machine, and the tailings outlet of the zinc-sulfur scavenging flotation machine is connected to the feed port of an oxide ore beneficiation system;

[0006] The concentrate outlet of the zinc-sulfur separation flotation machine is connected to the feed port of the zinc concentration flotation machine, the tailings outlet of the zinc-sulfur separation flotation machine is connected to the feed port of the zinc scavenging flotation machine, and the tailings outlet of the zinc scavenging flotation machine is connected to the feed port of the inclined plate thickener;

[0007] The liquid discharge port of the inclined plate thickener is connected to the water inlet of the return water system, the ore discharge port of the inclined plate thickener is connected to the feed port of the lead roughing flotation machine, the lead roughing flotation machine is connected to the discharge port of the sulfide ore powder bin, the concentrate outlet of the lead roughing flotation machine is connected to the feed port of the lead concentrator flotation machine, and the tailings outlet of the lead roughing flotation machine is connected to the feed port of the lead scavenger flotation machine;

[0008] The concentrate outlet of the zinc concentration flotation machine and the tailings outlet of the lead scavenging flotation machine are connected to the feed inlet of the zinc roughing beneficiation system.

[0009] Preferably, the tailings outlet of the zinc-sulfur concentration flotation machine and the concentrate outlet of the zinc-sulfur scavenging flotation machine are both connected to the feed port of the zinc-sulfur flotation machine;

[0010] The tailings outlet of the zinc concentration flotation machine and the concentrate outlet of the zinc scavenging flotation machine are both connected to the feed port of the zinc-sulfur separation flotation machine;

[0011] The tailings outlet of the lead concentration flotation machine and the concentrate outlet of the lead scavenging flotation machine are both connected to the feed inlet of the lead roughing flotation machine.

[0012] Preferably, the discharge port of the inclined plate thickener and the discharge port of the sulfide ore powder bin are both connected to the feed port of the ball mill, and the discharge port of the ball mill is connected to the feed port of the lead rougher flotation machine.

[0013] The utility model has the advantages that the tailings of the zinc-sulfur separation of the oxide ore are mixed with the sulfide ore powder after dehydration treatment to carry out lead selection operation together, which can effectively recover the lead, zinc and silver in the tailings of the zinc-sulfur separation of the oxide ore without affecting the recovery effect of the original sulfide ore system. Description of the drawings:

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] In the figure: zinc-sulfur flotation machine 1, zinc-sulfur selecting flotation machine 2, zinc-sulfur scavenging flotation machine 3, zinc-sulfur separation flotation machine 4, zinc selecting flotation machine 5, zinc scavenging flotation machine 6, inclined plate thickener 7, lead roughing flotation machine 8, lead selecting flotation machine 9, lead scavenging flotation machine 10, ball mill 11. Specific implementation method:

[0016] like Figure 1 As shown, a system for recovering lead and silver in zinc-sulfur separation tailings comprises a zinc-sulfur flotation machine 1, wherein the feed port of the zinc-sulfur flotation machine 1 is connected to the tailings outlet of the lead sulfide roughing system, the concentrate outlet of the zinc-sulfur flotation machine 1 is connected to the feed port of the zinc-sulfur concentration flotation machine 2, the tailings outlet of the zinc-sulfur flotation machine 1 is connected to the feed port of the zinc-sulfur scavenging flotation machine 3, the concentrate outlet of the zinc-sulfur concentration flotation machine 2 is connected to the feed port of the zinc-sulfur separation flotation machine 4, and the tailings outlet of the zinc-sulfur scavenging flotation machine 3 is connected to the feed port of the oxide ore beneficiation system;

[0017] The concentrate outlet of the zinc-sulfur separation flotation machine 4 is connected to the feed port of the zinc concentration flotation machine 5, the tailings outlet of the zinc-sulfur separation flotation machine 4 is connected to the feed port of the zinc scavenging flotation machine 6, and the tailings outlet of the zinc scavenging flotation machine 6 is connected to the feed port of the inclined plate thickener 7;

[0018] The liquid discharge port of the inclined plate thickener 7 is connected to the water inlet of the return water system, the ore discharge port of the inclined plate thickener 7 is connected to the feed port of the lead roughing flotation machine 8, the lead roughing flotation machine 8 is connected to the discharge port of the sulfide ore powder bin, the concentrate outlet of the lead roughing flotation machine 8 is connected to the feed port of the lead cleaning flotation machine 9, and the tailings outlet of the lead roughing flotation machine 8 is connected to the feed port of the lead scavenging flotation machine 10;

[0019] The concentrate outlet of the zinc concentration flotation machine 5 and the tailings outlet of the lead scavenging flotation machine 10 are connected to the feed inlet of the zinc roughing beneficiation system;

[0020] During production, the oxide ore powder is firstly subjected to lead sulfide roughing, the selected lead concentrate is sent to the lead concentrate processing system, and the tailings are sent to the zinc-sulfur flotation machine 1; the concentrate selected by the zinc-sulfur flotation machine 1 is sent to the zinc-sulfur concentrating flotation machine 2 for concentrating, the concentrate selected by the zinc-sulfur concentrating flotation machine 2 is sent to the zinc-sulfur separation flotation machine 4, the tailings of the zinc-sulfur flotation machine 1 are sent to the zinc-sulfur scavenging flotation machine 3 for scavenging, and the tailings of the zinc-sulfur scavenging flotation machine 3 are sent to the oxide ore beneficiation system;

[0021] The concentrate selected by the zinc-sulfur separation flotation machine 4 is sent to the zinc concentration flotation machine 5, and the tailings are sent to the zinc scavenging flotation machine 6; the concentrate selected by the zinc concentration flotation machine 5 is sent to the sulfide ore zinc roughing beneficiation system, and the tailings selected by the zinc scavenging flotation machine 6 are sent to the inclined plate thickener 7;

[0022] The inclined plate thickener 7 dehydrates the tailings selected by the zinc scavenging flotation machine 6, and then mixes them with the sulfide ore powder and sends them to the lead roughing flotation machine 8. The water discharged by the inclined plate thickener 7 is sent back to the return water system for recycling; the lead roughing flotation machine 8 performs roughing on the mixed minerals, and the concentrate is sent to the lead concentrating flotation machine 9, and the tailings are sent to the lead scavenging flotation machine 10; the concentrate selected by the lead concentrating flotation machine 9 is the lead concentrate, which is sold as a product after dehydration treatment, and the tailings of the lead scavenging flotation machine 10 are sent to the sulfide zinc roughing beneficiation system and processed together with the concentrate selected by the zinc concentrating flotation machine 5;

[0023] During the whole production process, the oxide ore is subjected to lead sulfide roughing and then zinc-sulfur flotation to separate zinc and sulfur. It needs to be roughed by zinc-sulfur flotation machine 1, concentrated by zinc-sulfur concentrator 2 and scavenged by zinc-sulfur flotation machine 3. The tailings are sent to the oxide ore beneficiation system, and the concentrate is further processed for zinc-sulfur separation. The zinc-sulfur separation is processed by zinc-sulfur separation flotation machine 4, concentrated by zinc concentrator 5 and scavenged by zinc flotation machine 6, and the concentrate is sent to the zinc roughing beneficiation system for further processing. The unselected tailings are sent to the inclined plate thickener 7 for dehydration and mixed with the sulfide ore powder. The ratio of zinc-sulfur separation tailings to sulfide ore powder is 0.6:100. The zinc-sulfur separation tailings are wet slurry samples, and the sulfide ore powder is dry ore. The mixed minerals are subjected to lead selection. After flotation by a lead roughing flotation machine 8, selection by a lead selecting flotation machine 9, and scavenging by a lead scavenging flotation machine 10, the concentrate is lead concentrate, and the tailings are sent to the sulfide ore zinc roughing selection system for further processing.

[0024] After dehydration, the tailings from the zinc-sulfur separation of oxide ore are mixed with sulfide ore powder for lead selection. This can effectively recover the lead, zinc and silver in the tailings from the zinc-sulfur separation of oxide ore without affecting the recovery effect of the original sulfide ore system.

[0025] The tailings outlet of the zinc-sulfur concentration flotation machine 2 and the concentrate outlet of the zinc-sulfur scavenging flotation machine 3 are both connected to the feed port of the zinc-sulfur flotation machine 1; the tailings of the zinc-sulfur concentration flotation machine 2 and the concentrate of the zinc-sulfur scavenging flotation machine 3 are sent back to the zinc-sulfur flotation machine 1 for re-floating to further recover valuable metals;

[0026] The tailings outlet of the zinc concentration flotation machine 5 and the concentrate outlet of the zinc scavenging flotation machine 6 are both connected to the feed port of the zinc-sulfur separation flotation machine 4; the tailings of the zinc concentration flotation machine 5 and the concentrate of the zinc scavenging flotation machine 6 are sent back to the zinc-sulfur separation flotation machine 4 for re-floating to further recover valuable metals;

[0027] The tailings outlet of the lead concentration flotation machine 9 and the concentrate outlet of the lead scavenging flotation machine 10 are both connected to the feed port of the lead roughing flotation machine 8; the tailings of the lead concentration flotation machine 9 and the concentrate of the lead scavenging flotation machine 10 are sent back to the lead roughing flotation machine 8 for re-floating to further recover valuable metals.

[0028] The discharge port of the inclined plate thickener 7 and the discharge port of the sulfide ore powder silo are both connected to the feed port of the ball mill 11, and the discharge port of the ball mill 11 is connected to the feed port of the lead roughing flotation machine 8; the ball mill 11 fully mixes the tailings of the zinc scavenging flotation machine 6 recovered by the inclined plate thickener 7 and the ore powder in the sulfide ore powder silo, and crushes them into the particle size required by the lead roughing flotation machine 8, so as to facilitate the recovery of valuable metals.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for recovering lead and silver from zinc-sulfur separation tailings, characterized in that: It comprises a zinc-sulfur flotation machine, wherein the feed port of the zinc-sulfur flotation machine is connected to the tailings outlet of the lead sulfide roughing system, the concentrate outlet of the zinc-sulfur flotation machine is connected to the feed port of the zinc-sulfur concentrating flotation machine, the tailings outlet of the zinc-sulfur flotation machine is connected to the feed port of the zinc-sulfur scavenging flotation machine, the concentrate outlet of the zinc-sulfur concentrating flotation machine is connected to the feed port of the zinc-sulfur separation flotation machine, and the tailings outlet of the zinc-sulfur scavenging flotation machine is connected to the feed port of the oxide ore beneficiation system; The concentrate outlet of the zinc-sulfur separation flotation machine is connected to the feed port of the zinc concentration flotation machine, the tailings outlet of the zinc-sulfur separation flotation machine is connected to the feed port of the zinc scavenging flotation machine, and the tailings outlet of the zinc scavenging flotation machine is connected to the feed port of the inclined plate thickener; The liquid discharge port of the inclined plate thickener is connected to the water inlet of the return water system, the ore discharge port of the inclined plate thickener is connected to the feed port of the lead roughing flotation machine, the lead roughing flotation machine is connected to the discharge port of the sulfide ore powder bin, the concentrate outlet of the lead roughing flotation machine is connected to the feed port of the lead concentrator flotation machine, and the tailings outlet of the lead roughing flotation machine is connected to the feed port of the lead scavenger flotation machine; The concentrate outlet of the zinc concentration flotation machine and the tailings outlet of the lead scavenging flotation machine are connected to the feed inlet of the zinc roughing ore dressing system.

2. A system for recovering lead and silver from zinc-sulfur separation tailings according to claim 1, characterized in that: The tailings outlet of the zinc-sulfur concentration flotation machine and the concentrate outlet of the zinc-sulfur scavenging flotation machine are both connected to the feed port of the zinc-sulfur flotation machine; The tailings outlet of the zinc concentration flotation machine and the concentrate outlet of the zinc scavenging flotation machine are both connected to the feed port of the zinc-sulfur separation flotation machine; The tailings outlet of the lead concentration flotation machine and the concentrate outlet of the lead scavenging flotation machine are both connected to the feed inlet of the lead roughing flotation machine.

3. A system for recovering lead and silver in zinc-sulfur separation tailings according to claim 1 or 2, characterized in that: The discharge port of the inclined plate thickener and the discharge port of the sulfide ore powder bin are both connected to the feed port of the ball mill, and the discharge port of the ball mill is connected to the feed port of the lead roughing flotation machine.

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