Grinding aid for gold ore grinding with leaching assisting effect and preparation method therefor

A grinding aid and gold ore technology, which is applied in the direction of chemical instruments and methods, other chemical processes, process efficiency improvement, etc., can solve the problem that the grinding fineness cannot reach the designed fineness, increase the production load of equipment, tailings The problem of high gold grade running, to achieve the effect of reducing the amount of protective alkali, good grinding aid effect, and reducing production cost

Active Publication Date: 2016-07-06
HENAN GREEN GOLD MINING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of gold mines, many enterprises have to increase the production load of equipment in order to complete the gold production task, so that the grinding fineness cannot reach the designed fineness, resulting in high tailings gold grade. Result of reduced recovery

Method used

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  • Grinding aid for gold ore grinding with leaching assisting effect and preparation method therefor
  • Grinding aid for gold ore grinding with leaching assisting effect and preparation method therefor
  • Grinding aid for gold ore grinding with leaching assisting effect and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A grinding aid for gold ore grinding with leaching aid function,

[0014] Its components, by weight, include: CaO 2 10%, NaCl 30%, sodium tripolyphosphate 30%, sodium humate 30%, mix the components uniformly in proportion to get the grinding aid. Its dosage is 500g / t by weight, and it is directly added in solid form from the feed inlet of the ball mill.

[0015] An oxidized ore with a gold content of 4.25g / t. The metal minerals in the ore are mainly pyrite, followed by pyrrhotite and chalcopyrite, and a small amount of galena, sphalerite and limonite. Non-metallic minerals are mainly quartz, followed by potassium feldspar and plagioclase. The ore is of medium hardness.

[0016] Grinding adopts XMQ67 type 240×200 conical ball mill, steel ball filling rate is 35%, steel ball diameter and weight ratio are 26mm, 10%; 21mm, 15%; 18mm, 65%; 10mm, 10%; total weight 8Kg. The grinding concentration is 70%.

[0017] Cyanide leaching conditions: leaching pulp concentration 4...

Embodiment 2

[0021] A grinding aid for gold ore grinding with leaching aid function,

[0022] Its components, by weight, include: CaO 2 20%, NaCl 20%, sodium tripolyphosphate 30%, sodium humate 30%, mix the components uniformly in proportion to get the grinding aid. Its dosage is 500g / t by weight, and it is directly added in solid form from the feed inlet of the ball mill.

[0023] An oxidized ore with a gold content of 1.95g / t. The metal minerals in the ore are mainly limonite and hematite, with a small amount of chalcopyrite and pyrite; the gangue minerals are mainly dolomite, calcite, quartz and mica. The ore is medium to soft in hardness.

[0024] Cyanide leaching conditions: leaching pulp concentration 40%, cyanide concentration 0.1%, cyanide leaching time 24 hours.

[0025] Grinding adopts XMQ67 type 240×200 conical ball mill, steel ball filling rate is 35%, steel ball diameter and weight ratio are 26mm, 10%; 21mm, 15%; 18mm, 65%; 10mm, 10%; total weight 8Kg. The grinding concen...

Embodiment 3

[0029] A grinding aid for gold ore grinding with leaching aid function,

[0030] Its components, by weight, include: CaO 2 20%, NaCl 30%, sodium tripolyphosphate 20%, sodium humate 30%, mix the components uniformly in proportion to obtain the grinding aid. Its dosage is 400g / t by weight, and it is directly added in solid form from the feed inlet of the ball mill.

[0031] A quartz vein type gold deposit contains 1.95g / t gold. The metal minerals in this ore are mainly galena and pyrite; the gangue minerals are mainly quartz, potassium feldspar and so on. The hardness of the ore is medium to hard.

[0032] Grinding adopts XMQ67 type 240×200 conical ball mill, steel ball filling rate is 35%, steel ball diameter and weight ratio are 26mm, 10%; 21mm, 15%; 18mm, 65%; 10mm, 10%; total weight 8Kg. The grinding concentration is 70%.

[0033] Cyanide leaching conditions: leaching pulp concentration 40%, cyanide concentration 0.1%, cyanide leaching time 24 hours.

[0034] Applicati...

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Abstract

The invention relates to a grinding aid for gold ore grinding with a leaching assisting effect. The grinding aid is prepared from the ingredients in percentage by weight: 10% to 20% of CaO2, 20% to 30% of NaCl, 20% to 30% of sodium tripolyphosphate and 20% to 30% of sodium humate, wherein the sum of weight percent of all the ingredients is 100%. The grinding aid is prepared through uniformly mixing all the ingredients proportionally. The grinding aid has the advantages that the use level is low, the grinding assisting effect is good, the grinding aid plays a role in helping the leaching of gold and is directly added from an inlet of a ball mill in the form of solid, and the operation is simple.

Description

technical field [0001] The invention belongs to the technical field of ore dressing, and in particular relates to a grinding aid for gold ore grinding and a preparation method thereof. Background technique [0002] In the production process of gold mines, many enterprises have to increase the production load of equipment in order to complete the gold production task, so that the grinding fineness cannot reach the designed fineness, resulting in high tailings gold grade. A result of reduced recovery. There are also many enterprises who hope to improve the ore processor of the equipment as much as possible without changing the existing equipment, process flow and technical indicators. At this time, the best way is to use grinding aids and leaching aids. Contents of the invention [0003] In order to solve the above problems, the present invention provides a leaching aid for gold ore grinding and a preparation method thereof. The object of the present invention is achieved ...

Claims

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Application Information

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IPC IPC(8): C09K3/14C22B3/04C22B11/00
CPCY02P10/20
Inventor 宋翔宇王林山翟晓辰
Owner HENAN GREEN GOLD MINING TECH CO LTD
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