5 results about "Barium chloride" patented technology

The invention discloses a production method for nano barium sulfate particles, which comprises the following steps: adding EDTA disodium salt in a barium chloride solution with concentration of 0.01-0.3mol/L, wherein the mole ratio of barium chloride to EDTA disodium salt in the solution is 1:1, adding double decyl dimethyl ammonium bromide, wherein the mole concentration of double decyl dimethyl ammonium bromide accounts for 0.1-0.5% of mole concentration of the barium chloride, acquiring a solution 1; adding double decyl dimethyl ammonium bromide in a sodium sulfate aqueous solution having the mole concentration equal with the barium chloride solution, the mole concentration of double decyl dimethyl ammonium bromide in the solution accounts for 0.1-0.5% of the mole concentration of sodium sulfate, acquiring an solution 2; respectively accessing the solution 1 and the solution 2 to an inlet of a micro-reactor, filtering and washing the reaction products, and drying the washed filtering substance to obtain the nano barium sulfate powder particles. Under the condition that the existence of a complexing agent by using the micro-reactor, a surfactant is used for inhibiting the growth of barium sulfate deposition to obtain the nano barium sulfate particles with fine particle size and controllable particle size.

The invention discloses a full-inorganic interior and exterior wall coating and a preparation method thereof in the technical field of inorganic coatings. The full-inorganic interior and exterior wallcoating comprises the following raw materials by weight: 20-30 parts of a potassium silicate solution, 10-25 parts of silica sol, 30-40 parts of calcium carbonate, 15-25 parts of a barium chloride solution, 10-15 parts of a sodium phosphate solution, 10-15 parts of pigment, 5-8 parts of an assistant, 25-30 parts of deionized water and 1-2 parts of a thickening agent. The silica sol is added intothe potassium silicate solution, nano titanium dioxide particles in the silica sol are uniformly dispersed in the potassium silicate solution, the nano titanium dioxide itself has excellent corrosionresistance and high hardness, and the coating contains the nano titanium dioxide, so that the corrosion resistance and strength of the coating are improved; the barium chloride solution is added intoa suspension of calcium carbonate and sodium phosphate, the sodium phosphate and barium chloride react to generate barium phosphate precipitate, the barium phosphate precipitate coats the outer surfaces of calcium carbonate particles, dissolution of calcium carbonate is inhibited, and the corrosion resistance of the coating is greatly improved.

The invention relates to a method for extracting soluble potassium ions from hydromica ore. The method comprises the following steps: (1) pulverizing the hydromica ore and then performing acid treatment; and (2) mixing the hydromica subjected to the acid treatment and an aqueous solution of barium chloride, adjusting the pH value of the mixture to 2-5, reacting for 1-5h at the temperature of 30-70 DEG C, and filtering to collect the filtrate containing potassium ions. The method is simple in steps, high in potassium ion extraction rate (up to 75%), low in cost and less in environmental pollution, and can keep the lamellar structure of the hydromica ore, so the method is suitable for industrial production.

The invention relates to a method for co-producing barium chloride and ceramic titanium dioxide (TiO2). The method specifically comprises the following steps: carrying out acidolysis reaction on byproduct hydrochloric acid of chlorination-process titanium dioxide containing TiOCl2 and witherite, and introducing Ba and metal elements such as impurities Fe, Ca, Mg and the like in witherite ore intoa solution in the form of chlorate; soluble TiOCl2 in hydrochloric acid is subjected to a hydrolysis reaction along with reduction of the concentration of free hydrochloric acid in the acidolysis reaction to separate out TiO2, and hydrochloric acid as a hydrolysis byproduct is also used for supplementing hydrochloric acid consumed by the acidolysis reaction of witherite; separating silicon-containing acid-insoluble substances in witherite ore and TiO2 separated from TiOCl2 in chlorination-process titanium dioxide byproduct hydrochloric acid by hydrolysis, and washing and drying to obtain a ceramic titanium dioxide finished product; adding Ba (OH) 2 and H2C2O4 into the acidolysis solution for neutralization twice, removing impurity elements such as Fe, Ca and Mg in the acidolysis solution,performing flash evaporation and concentration on the purified solution, and then freezing, crystalizing and separating to obtain hydrated BaCl2. 2H2O, and washing and drying the hydrated BaCl2. 2H2Oto obtain a BaCl2 finished product.

The invention relates to the technical field of material preparation, in particular to a preparation method of anhydrous barium carbonate crystals with special morphology. The preparation method comprises the following steps: respectively preparing a barium chloride solution with a concentration of 0.01-1 mol/L and a sodium carbonate solution with a concentration of 0.01 mol/L; adding a crystal form control agent into the barium chloride solution, and conducting stirring to prepare a primary solution; adding a sodium carbonate solution into the primary solution, carrying out stirring and heating to 30-70 DEG C, and carrying out a hydrothermal reaction to obtain reaction slurry; and filtering the reaction slurry, washing a white precipitate with deionized water to remove chloride ions, performing drying with an electrothermal blowing dryer to prepare spherical and petal-shaped anhydrous barium carbonate crystals, and distilling a filtrate to obtain sodium chloride crystals. The method disclosed by the invention is short in reaction time, simple in production process and equipment, high in product yield, low in cost, free of environmental pollution and easy to realize industrial production.