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Preparation method of high-purity low-strontium low-water barium nitrate
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A manufacturing method and technology of barium nitrate, applied in the direction of calcium/strontium/barium nitrate, etc., can solve the problems such as difficulty in weighing barium nitrate, unstable performance, inability to apply to the working conditions of high-end products, etc. High economy and the effect of improving economic efficiency
Pending Publication Date: 2019-11-26
青岛益丰源化工有限公司
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Problems solved by technology
[0005] Similarly, barium nitrate with high water content is difficult to weigh and unstable in performance, and cannot be used in high-end products.
Method used
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Embodiment 1
[0026] A kind of manufacture method of high-purity low-strontium low-water barium nitrate comprises the following steps:
[0027] 1) Preparation before production
[0028] ① Raw material preparation: Prepare barite 100Kg, agricultural industry NH 4 NO 3 90Kg, one spectroscopically pure barium nitrate seed crystal weighing 0.6Kg;
[0029] ②Auxiliary material preparation: prepare enough deionized water, enough industrial grade NaOH aqueous solution, enough industrial grade H 2 SO 4 Aqueous solution, activated carbon 5Kg, sufficient amount of absolute ethanol;
[0030] ③Equipment and tooling preparation: glass triangular flask with stirring device, 2 gas absorption bottles, vacuum pump, temperature control device, sealing heating device;
[0031] 2) Pre-preparation
[0032] ①Calcinate the barite prepared in stage 1) step ① to obtain BaS black ash, put the obtained BaS black ash into 1200Kg deionized water, then raise the temperature to 50°C, and then stir until the solid co...
Embodiment 2
[0044] A kind of manufacture method of high-purity low-strontium low-water barium nitrate comprises the following steps:
[0045] 1) Preparation before production
[0046] ① Raw material preparation: Prepare barite 120Kg, agricultural industry NH 4 NO 3 80Kg, one spectroscopically pure barium nitrate seed crystal weighing 0.5Kg;
[0047] ②Auxiliary material preparation: prepare enough deionized water, enough industrial grade NaOH aqueous solution, enough industrial grade H 2 SO 4 Aqueous solution, activated carbon 3Kg, sufficient amount of absolute ethanol;
[0048] ③Equipment and tooling preparation: glass triangular flask with stirring device, 2 gas absorption bottles, vacuum pump, temperature control device, sealing heating device;
[0049] 2) Pre-preparation
[0050] ①Calcinate the barite prepared in stage 1) step ① to obtain BaS black ash, put the obtained BaS black ash into 1000Kg deionized water, then raise the temperature to 60°C, and then stir until the solid co...
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Abstract
The invention discloses a preparation method of high-purity low-strontium low-water bariumnitrate. The high-purity low-strontium low-water bariumnitrate provided by the invention is obtained by using low-cost barite and agricultural industrial ammoniumnitrate as main raw materials by batch extraction of three simple and controllable steps; and the method specially comprises the following steps:the first step is prefabrication, the agricultural industrial ammonium nitrate reacts with bariumsulfide based components obtained by calciniation of the barite to form a barium nitrate solution using barium nitrate as a main solute, a part of easily-separated impurities are adsorbed by activated carbon during boiling according to the characteristics of impurities in the solution, finally directional recrystallization is performed by utilizing the solubility difference of the barium nitrate and strontium nitrate and adopting spectrally-pure barium nitrate crystals in a region which does notoverlap solubility, and therefore the only monocrystal is obtained by strictly controlling the temperature gradient, wherein the only monocrystal is the high-purity low-strontium low-water barium nitrate. The high-purity low-strontium low-water barium nitrate provided by the invention has the advantages of low strontium, low water and high purity.
Description
technical field [0001] The invention relates to the technical field of preparation of fine inorganic chemical fillers, in particular to a method for manufacturing high-purity, low-strontium and low-water barium nitrate. Background technique [0002] At present, the main methods of producing barium nitrate are: 1. Industrial grade barium carbonate reacts with industrial grade nitric acid to produce barium nitrate; 2. Industrial grade barium chloride reacts with sodium nitrate or ammonium nitrate to produce barium nitrate; 3. Bariumsulfide and industrial grade Nitric acid reacts directly to produce barium nitrate. [0003] The purity of the barium nitrate produced by the above method is relatively poor, the highest can only reach 99.0% (international first-class), the barium nitrate of this kind of purity can no longer meet the requirements for barium nitrate in the electronics industry, and the strontium content in it can not meet the requirements. [0004] In recent years,...
Claims
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Application Information
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