Rubidium chloride is soluble in water, slightly soluble in methanol, ethanol and ammonia. It is stable in air and exists in nature in the form of double salt carnallite. Because of its unique properties, rubidium has a wide range of uses and occupies an important position in the national economy. It plays an important role in both traditional fields and new application fields, especially in high-tech fields. obvious.In traditional fields, such as drivers, special glasses, electronic devices, biological materials and other areas, there has actually been fantastic development recently. In brand-new fields, such as rubidium atomic clock, magnetic liquid power generation, energy as well as various other areas, it has actually shown solid vigor. Today, in developed countries, the percentage of rubidium used in high-tech areas gets to 80%, and the proportion of rubidium used in traditional areas is 20%. Rubidium is an essential basic material for the manufacture of digital gadgets (photomultiplier tubes, photocells), spectrophotometers, automatic control, spectrometry, color films, shade television, radar, lasers, glass, ceramics, digital clocks, and so on; precede modern technology, Ion thrusters as well as thermal ion power converters call for a large quantity of rubidium; rubidium hydroxides as well as borides can be utilized as high-energy strong fuels; contaminated rubidium can be made use of to identify the age of minerals; on top of that, rubidium compounds are made use of in the pharmaceutical and also paper markets; rubidium can also As a getter for vacuum cleaner systems. Rubidium is an extremely energetic unusual antacids steel with a content of 0.028% in the planet’s crust. It is extremely dispersed and has no separate mineral deposits. It mainly occurs in lepidolite [KRbLi(OH, F)Al2Si3O10], carnallite [KCl· MgCl2·6H2O] and other solid ores and salt lake brine. 55% of my country’s rubidium resources are stored in lepidolite. Jiangxi Yichun, Hunan, Hubei, Henan, Guangdong and Sichuan are the main enrichment places for my country’s rubidium resources. The salt lake brines and underground brines in Qinghai, Tibet Plateau and other places are also very rich in rubidium. However, because the chemical properties of rubidium are similar to those of other coexisting metal ions, industrial separation is difficult, which limits the full utilization of rubidium resources. yield is lower.
Rubidium Chloride Properties:
Melting point
715 °C (lit.)
Boiling point
1390 °C
density
2.8 g/mL at 25 °C (lit.)
refractive index
1.493
Fp
1390°C
storage temp.
Store at +5°C to +30°C.
solubility
H2O: 1 M at 20 °C, clear, colorless
form
beads
color
White
Specific Gravity
2.8
PH
5.0-8.0 (25℃, 1M in H2O)
Water Solubility
910 g/L (20 ºC)
Rubidium Chloride Uses
Rubidium chloride is used to prepare high-purity rubidium. Using metal calcium particles with a purity of more than 95% and rubidium chloride powder with a purity of 98.0-99.9% as raw materials, firstly, the metal calcium particles are mixed with the rubidium chloride powder, and stainless steel is used as a container. It is heated to 842℃～1390℃ in an inert atmosphere to carry out thermal reduction and replacement reaction. The metal rubidium vapor is guided to the condensation part through the heated straight-through pipeline under vacuum suction, and then condensed into droplets and then flows into the collector. The obtained The purity of liquid metal rubidium can reach 99.50-99.99%. The invention provides a process for preparing high-purity rubidium by one-step heating method of reducing metal, which does not require complicated processes such as multiple heating reduction, electrolysis, distillation, etc., and has the advantages of simple and easy purification process, low cost, green and pollution-free, safe and reliable. , suitable for continuous industrialization. Compared with the existing technology, it has better practicality and industrialization advantages.
A method for preparing three-dimensional graphene-rubidium phosphotungstate from rubidium chloride belongs to the technical field of chemical batteries. The rubidium chloride aqueous solution and the phosphotungstic acid aqueous solution are mixed and reacted to obtain rubidium phosphotungstate; After mixing with an aqueous solution of graphene oxide, a hydrothermal reaction is carried out, and after the reaction is completed, it is cooled to room temperature, and the solid material is taken out and freeze-dried to obtain three-dimensional graphene-rubidium phosphotungstate. The preparation method of the invention is simple, the prepared rubidium phosphotungstate is small in size and uniform in appearance, which is beneficial to solve the problem of difficult insertion and extraction of lithium ions with microcrystalline structure, and is used as a cathode material for lithium ion batteries, which can improve the performance of heteropolyacids. Conductivity of Molecular Cluster Batteries.
Preparation of Rubidium Chloride
A method for extracting rubidium chloride from kaolin tailings, comprising the following steps: (1) add the ore sample to the vibrating disc mill for vibrating grinding for 4min, pass through a 300-mesh screen to obtain 95% mineral powder of -300 mesh; carry out disc grinding and crush the leaching agent CaF2, and pass through a 300-mesh screen; take 200g of ore The powder is mixed with 30g CaF2 leaching agent, and then added to 400ml of sulfuric acid solution with a mass fraction of 40%; (2) Leaching conditions: leaching with 40% mass fraction of sulfuric acid and 15% mass fraction of calcium fluoride (the mass ratio of calcium fluoride and mineral powder), adding calcium fluoride and sulfuric acid to react to release F-, F- to mineral powder Decomposition occurs, the liquid-solid ratio (sulfuric acid: (mineral powder + calcium fluoride)) is 2:1, the leaching temperature is 95°C, and the leaching time is 6h, (the mass of sulfuric acid and calcium fluoride added is based on the mass of rubidium-containing minerals ), so that the rubidium ions in the mixture are fully leached; using calcium fluoride and sulfuric acid as leaching agents in the high temperature zone may be:
(3) the solution obtained in step (2) is subjected to vacuum filtration under the condition of incomplete cooling, and the obtained leaching residue is beaten and washed once (liquid-solid volume ratio 1.5:1), time 30min, and then the second pumping is carried out Vacuum filtration, rinsed twice with hot water (each rinse is about 50 mL) to obtain a colorless and transparent leachate; (4) NaOH is added to the leachate obtained in step (3), and the leachate is neutralized to PH=7; (5) Take 400 mL of leachate and slowly add soda ash solution while stirring, gradually adjust the pH of the solution to be slightly greater than 7.0, control the pH of the end point, continue to stir for 50 minutes after stabilization, let stand for 10 minutes, then vacuum filter, and rinse the calcium-removing residue with a total of 100 mL of water wash three times; (6) 500 mL of the obtained leachate in (5) was evaporated and concentrated to 50mL to obtain a rubidium-enriched leachate; (7) Through the process of crushing-acid leaching-washing-neutralization-decalcification-evaporation, the recovery rate of rubidium reaches 83%, which has a relatively high metal rate; (8) The concentrated solution was mixed with 20 g/L of sodium hydroxide and alkalized as an extraction feed liquid. The organic phase was composed of t-BAMBP and sulfonated kerosene, and the concentration of t-BAMBP was 1.2 mol/L. Prepare 450mL extraction phase according to the above formula, and prepare 200mL of 5g/L NaOH solution as detergent and 300mL of 1mol/L HCl back-extract at the same time; (9) the extractant and concentrated solution of above-mentioned preparation are mixed and stirred according to volume ratio O/A=1:3, after standing for stratification, respectively collect water phase and organic phase, then new organic phase and water phase are in proportion 1:3 mixing and stirring, standing for stratification, collecting the aqueous phase and the organic phase respectively, and repeating the countercurrent extraction for 3 times to obtain the loaded organic phase; (10) The loaded organic phase obtained in (9) and the detergent prepared in (8) are mixed and washed according to O/A=8:1, the washing time is 5min, the washing is repeated twice, and the washing water is returned to step (6) for crystallization ; (11) the organic phase after washing and the back extraction liquid obtained in step (8) were mixed and stirred for 5 min according to the volume ratio O/A=3:1, after standing for stratification, the aqueous phase and the organic phase were collected respectively, and the new The back-extraction liquid and the organic phase were mixed and stirred for 5min, and the aqueous phase and the organic phase were collected after standing for stratification, and the countercurrent back-extraction was repeated 3 times to obtain a rubidium-enriched water phase; (12) through multistage countercurrent extraction-washing-countercurrent back-extraction, the recovery rate of rubidium reaches 97%, and the loss of rubidium in the extraction process is very small; (13) the water phase obtained in the step (11) is subjected to evaporative crystallization, to obtain the crude rubidium chloride with higher impurity content compared to the purified rubidium chloride; (14) the crude rubidium salt product obtained in the step (13) is added with water to heat up and dissolve, alkalization, extraction, and back-extraction are obtained to obtain the back-extract after concentrating, crystallization and filtration, so that most of sodium chloride and potassium remain in the mother liquor . Using the principle that potassium chloride and sodium chloride can dissolve in a small amount while rubidium chloride is insoluble in anhydrous alcohol, the rubidium chloride crystals are soaked and washed twice with anhydrous alcohol to obtain refined rubidium chloride.
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The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.
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We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
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