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Process for extracting platinum metals from ore containing platinum metal

A technology of platinum group metals and ores, applied in the field of extraction of platinum group metals, can solve the problems of long production cycle, many equipments, large investment, etc.

Inactive Publication Date: 2006-03-22
徐致钢
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing processes for extracting platinum group metals from ores containing platinum group metals use fire-wet comprehensive technology, which has a particularly long production cycle, large investment, many equipment, low extraction rate, and serious environmental pollution

Method used

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  • Process for extracting platinum metals from ore containing platinum metal
  • Process for extracting platinum metals from ore containing platinum metal
  • Process for extracting platinum metals from ore containing platinum metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1: In the ore of the above-mentioned raw materials, 2000g is optionally divided into 2 groups, and the two groups are respectively ground to 100-120 mesh, put into a microwave heating container and heated for 10min, and then the ore is mixed with 1mol / L H 2 SO 4 , according to the solid-to-liquid ratio of 1:4~5 to make a slurry, put it into a container with an ultrasonic stirrer and stir for 45 minutes, pump the slurry into a microwave heating container and heat it for 30-45 minutes, the temperature is controlled at 85°C~95°C, and then When cooled to 30°C to 35°C, concentrates are obtained after mixing with water and pressure filtration, and measured after drying: 165g concentrates for the first group and 168g concentrates for the second group.

[0037] The 165g fine sand of the first group is made into a slurry with a solid-to-liquid ratio of 1:5 with 8mol / L Hcl liquid, and when the slurry is heated to 85°C by microwave, 45-50ml of H 2 o 2 , control the tempe...

Embodiment 2

[0038] Embodiment 2: use the 2nd group to operate by the same process of embodiment 1, obtain the noble liquid of the mixed chloric acid of platinum group, obtain slag rate 83.6%, adopt reducing extraction process, cooperate spectrophotometer to detect in addition, and in table 1 In contrast, the total extraction rate of the platinum group reached 94.8%.

Embodiment 3

[0039] Embodiment 3: In the "black rock series" of 1,000 tons piled up in the factory, select 4000g ore and divide it into 2 groups, and the two groups use the pretreatment method in the process flow respectively to obtain two groups of 2000g pretreated fine ore sand : One set is 328g and the other is 332g.

[0040] Use 8mol / L Hcl and the first group of 328g concentrated ore to mix the slurry, the solid-liquid ratio is 1:4, use microwave to heat up to 85°C, and start adding about 100ml of H 2 o 2 Raise the temperature to 95°C, and control the temperature within 95°C, cool to 30-35°C after 30 minutes, filter and wash with an equal amount of distilled water, combine the washing and filtrate to obtain a platinum group metal chlorohydric acid mixed precious solution, and extract the residue The rate is 84.85%. When using reduction, extraction and other processes and spectrophotometric detection, the extraction rate close to the content in Table 1 is obtained: 93.8%

[0041] The ...

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Abstract

The process of extracting platinum metals from ore containing platinum metals is to extract high purity platinum metals by means of ultrasonic cavitation and great power microwave set with the specific effects of crisping, puncturing, separation, polymerization, etc. The extracting process is closed one including microwave clean, energy saving and efficient treatment and ultrasonic cavitation with instantaneous huge mass transfer and chemical reaction effects.

Description

technical field [0001] The invention relates to a precious metal smelting process, in particular to a process for extracting platinum group metals from ores containing platinum group metals. technical background [0002] The traditional geochemical theory of mineral deposits holds that: platinum group metal deposits are mineral deposits formed in the basic and ultrabasic magma stages, and are products of high temperature, and such mineral resources have been found so far in China. To meet the urgent needs of national economic development, our country has to spend a lot of foreign exchange to import these strategic materials every year. [0003] In the past ten years, countless scientific and technological workers (geology, mineral geology) have found that a rock series named "black rock series" contains resources that can be fully mined and extracted with huge economic value. This rock series is A marine fine-grained sedimentary rock series characterized by rich organic mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/00C22B3/00
CPCY02P10/20
Inventor 徐致钢
Owner 徐致钢
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