Heap-leaching dressing process for clay type gold mine

A clay-type, gold ore technology, applied in the field of heap leaching beneficiation technology, can solve the problems of affecting the overall permeability of the ore heap, easy to disperse and pulverize the agglomerates, and increase production costs, etc., and achieves a wide source of sawdust, less equipment, lower The effect of production costs

Inactive Publication Date: 2007-05-30
钟志林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages: when the amount of cement is small, the aggregates are easy to disperse and pulverize, which affects the overall permeability of the ore heap; when the amount of cement is large, the production cost is increased; and the permeability of the ore heap is poor, and the gold leaching rate is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Clay-type gold ore heap leaching mineral processing technology, it is realized by the following steps:

[0018] 1) Raw ore crushing: Clay-type (later-type) gold ore is crushed to a particle size of 4.9 cm.

[0019] 2) Agglomeration: ①Put the sawdust and the crushed clay-type gold ore into the granulator and mix them well. ); ②The amount of water added is 15% of the weight of the dry material, intuitively, the aggregate is not seriously sticking to the belt.

[0020] 3) Heaping: During the heaping process, before the pellets dry, they should be piled up in sections and in time, and immediately covered with a layer of straw to keep the pellets moist. The length of the straw is 18cm.

[0021] 4) Spraying: the spraying intensity is 20 liters / square meter hour, and the spraying interval is 1.5 hours.

Embodiment 2

[0023] Clay-type gold ore heap leaching mineral processing technology, it is realized by the following steps:

[0024] 1) Raw ore crushing: Clay type (later type or black soil type) gold ore is crushed with a particle size of 3cm.

[0025] 2) Agglomeration: ① Put the loose seepage material sawdust and the crushed clay-type gold ore into the granulator and mix them evenly. The amount added is 3kg per ton of ore; ② The amount of water added is 20% of the weight of the dry material. %, intuitively limited to the fact that the pellets are not seriously sticking to the belt.

[0026] 3) Heaping: During the heaping process, before the pellets dry, they should be piled up in sections in time, and immediately covered with a layer of straw to keep the pellets moist. The length of the straw is 20cm.

[0027] 4), spraying: the spraying intensity is 30 liters / square meter hour, and the spraying interval time is 2.0 hours. The results are shown in Table 1.

Embodiment 3

[0029] Clay-type gold ore heap leaching mineral processing technology, it is realized by the following steps:

[0030] 1) Raw ore crushing: Clay type (black soil type) gold ore is crushed to a particle size of 2 cm.

[0031] 2) Agglomeration: ①Put the loose seepage material sawdust and the crushed clay-type gold ore into the granulator and mix them well. ); ②The amount of water added is 25% of the weight of the dry material, intuitively, the grain is not seriously sticking to the belt.

[0032] 3) Heaping: During the heaping process, before the pellets dry, they should be piled up in sections in time, and immediately covered with a layer of straw to keep the pellets moist. The length of the straw is 22cm.

[0033] 4), spraying: the spraying intensity is 40 liters / square meter hour, and the spraying interval time is 2.5 hours.

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Abstract

The invention discloses an ore selecting technique through piling method, which comprises the following steps: 1) grinding ore with grain size less than 5cm; 2) making particle; 3) constructing pile; paving a layer of straw to mask; cutting straw with length at 18-22cm; 4) sprinkling with strength at 20-40l / cm2 / h; setting the interval sprinkling time not less than 1.5h; blending clay gold and loose permeatible sawdust in the graining machine evenly with 1-5kg per ton; adding enough water.

Description

technical field [0001] The invention belongs to the field of heap leaching mineral processing technology, and in particular relates to a heap leaching mineral processing technology of clay type gold ore. Background technique [0002] Heap leaching method is a relatively new gold extraction process developed in the early 1970s. This method has the advantages of simple process, low investment, low cost, and large or small production scale, and is suitable for processing low-grade gold. Gold-bearing oxide ore, tailings, slag, etc. Clay-type (later-type, black-type) gold deposits have large reserves and low grades, and the economic benefits of beneficiation by other methods are poor. However, if the heap leaching method is used for beneficiation, if it is not broken or the crushed particle size is coarse, it is difficult for the leaching solution to penetrate into the inside of the ore particle; . Americans use binder cement to make loose fine-grained ore into aggregates to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/22C22B11/00
CPCY02P10/20
Inventor 钟志林
Owner 钟志林
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