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A chemical phase analysis method for rubidium in metal ore
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A metal ore and phase analysis technology, applied in thermal excitation analysis, material excitation analysis, etc., to achieve the effect of wide linear range, good reproducibility, and small background interference
Active Publication Date: 2022-03-08
长沙矿冶院检测技术有限责任公司
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Problems solved by technology
In order to improve and enhance the extraction technology of rubidium, the occurrence state of rubidium must first be clarified, but so far there has been no report on the chemical phase method of rubidium
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Embodiment 1
[0025] The mensuration of embodiment 1 rubidium content
[0026] The beneficiation of a mining area enriches rubidium-containing mica, rubidium in fluorite, silicon-aluminum oxides and rubidium and refractory minerals in feldspar, and there are many types of polymetallic minerals. For such minerals with a very close symbiotic relationship and complex ore material components, the method of this embodiment can be used to determine the total rubidium content in the sample, the rubidium content in mica, the rubidium content in iron and aluminum oxides, silicates and other minerals. Rubidium content in minerals, rubidium content in fluorite.
[0027] The mensuration of total rubidium content of present embodiment: take by weighing 0.1 gram of sample in the plastic king beaker, add a small amount of water wetting, add mixed acid: 10ml hydrochloric acid (36%~38%), 3~5ml nitric acid (65%~68%) %), 5ml hydrofluoric acid (≥40%) and 5mL perchloric acid (70%~72%), heated to 270-280°C for ...
Embodiment 2
[0042] Embodiment 2 precision and actual sample test
Embodiment 1
[0043]For the precision of the determination of rubidium content by the ICP-OES method in Example 1, use the national standard materials lithium ore GBW07152, tantalum ore GBW07154, and self-made standard samples of rubidium roughing concentrate and fluorite ore to calculate the results of 11 parallel measurements , the main components of the reference material are shown in Table 1.
[0044] Table 1 Main Components of Standard Substances
[0045]
[0046] The results of 11 parallel determinations of four samples are shown in Table 2:
[0047] Table 2 Precision Test
[0048]
[0049] The test results show that the method of the invention has high precision and wide application range.
[0050] Adopt the method of embodiment 1 to test 6 samples in a certain mining area, the result data is as table 3, and the customer feedback is very good:
[0051] table 3
[0052]
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Abstract
The invention discloses a method for chemical phase analysis of rubidium in metal ores. The determination of rubidium content of mica includes: leaching a sample with hydrochloric acid on a boiling water bath, and obtaining filtrate and residue after filtering; the determination of rubidium content of iron-aluminum oxide: The residue was washed with hydrochloric acid-SnCl 2 The solution is leached on a boiling water bath, and the filtrate and residue are obtained after filtration; determination of rubidium content of silicate and other minerals: ash the residue, add hydrochloric acid, nitric acid, hydrofluoric acid and perchloric acid to heat and decompose completely, evaporate to dryness Add nitric acid; Determination of fluorite rubidium content: Add metal ore sample to boric acid, hydrochloric acid, sulfuric acid mixed solution, boil for reaction, filter; Determination of total rubidium content: Add metal ore sample to hydrochloric acid, nitric acid, hydrofluoric acid and perchloric acid Heating decomposition is complete, evaporate to dryness and add nitric acid. Finally, the rubidium content was determined by ICP‑OES. The method of the invention is simple and rapid, has low detection limit, high sensitivity, good precision, good reproducibility, wide linear range and can meet production needs.
Description
technical field [0001] The invention relates to a mineral phase analysis method, in particular to a chemical phase analysis method for rubidium in metal ore. Background technique [0002] Rubidium is a rare metal resource that is scarce in the earth's crust. Its compounds have extremely excellent photoelectric properties and special properties, and are widely used in military, scientific research, and civilian applications such as catalysts, photoelectric cells, special glass ceramics, bioengineering, and communication technologies. field. my country is rich in rubidium resources, but there are many lean ores and complex symbiosis. Rubidium has not been found as an independent mineral so far, and it is often associated with other alkali metals. It mainly occurs in granite pegmatite, brine and potash deposits, and is closely related to fluorite ore. The extremely complicated state of existence makes it difficult to develop and extract. Rubidium is extremely rare because of...
Claims
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