83 results about "Sodium sesquicarbonate" patented technology

A method for removing impurities from a waste solid to provide at least a portion of a suitable crystallizer feed to a process for making crystalline sodium carbonate, bicarbonate, and / or other derivatives. The method comprises: contacting the waste solid with a leach solution to dissolve at least one impurity and dissolving the resulting leached residue. Leaching may include heap percolation. The leach solution may comprise a crystallizer purge liquor, a process waste effluent, a mine water, or mixtures thereof. The method may further comprise adding a magnesium compound to the resulting leached residue during or after its dissolution to remove another impurity. The waste solid preferably comprises a pond solid containing such impurities. The pond solid may be recovered from a pond receiving crystallizer purge liquor(s) and / or other process waste effluent(s). The pond solid may contain sodium carbonate, any hydrate thereof, sodium bicarbonate, and / or sodium sesquicarbonate. The impurities to be removed may comprise sodium chloride, sodium sulfate, silicates, and / or organics.

A magnesium treatment for removing water-soluble impurities in a process for making crystalline sodium carbonate, bicarbonate, or sulfite. A waste comprising such impurities is treated with a magnesium compound to form water-insoluble matter which is removed to form a purified solution. The treatment may be performed on a solution which contains the waste and optionally dissolved calcined trona. The purified solution may be used as a feedstock to form crystalline soda ash, and / or used as a reactant to produce crystalline sodium sulfite or bicarbonate via reaction with SO2 or CO2. In preferred embodiments, the waste may comprise a purge or weak liquor, a reclaimed solid, or combinations thereof. The water-soluble impurities may be silicates and / or foam-causing impurities, and the waste may contain sodium bicarbonate, sodium sesquicarbonate, and / or one or more sodium carbonate hydrates, such as decahydrate.

A process for producing sodium salts, which comprises adding solid sodium carbonate to a first aqueous solution containing sodium carbonate and sodium hydrogencarbonate, to prepare a second aqueous solution, precipitating, separating and recovering from the second aqueous solution sodium sesquicarbonate crystals containing at least 50 mol % of the sodium hydrogencarbonate component contained in the second aqueous solution, and further recovering sodium carbonate from a mother liquor remaining after separating the sodium sesquicarbonate crystals from the second aqueous solution.

A process for producing sodium salts, which comprises adding solid sodium carbonate to a first aqueous solution containing sodium carbonate and sodium hydrogencarbonate, to prepare a second aqueous solution, precipitating, separating and recovering from the second aqueous solution sodium sesquicarbonate crystals containing at least 50 mol % of the sodium hydrogencarbonate component contained in the second aqueous solution, and further recovering sodium carbonate from a mother liquor remaining after separating the sodium sesquicarbonate crystals from the second aqueous solution.

The present invention is a system and method for reducing the size of a hygroscopic material while simultaneously drying the material at a relatively low temperature to a predetermined value during the reduction process. The present invention utilizes a preconditioning make-up air system to significantly dehumidify the make-up air to values in the range of 0.02 grains per pound of dry air while limiting the temperature of the make-up air exiting the preconditioning make-up air system to below a predetermined critical value. While not limited in its application to any one particular hygroscopic material, the present invention is particularly adapted to uses where the product is a temperature-sensitive, water adsorbing material such as sodium sesquicarbonate or trona ore.

A method for removing impurities from a waste solid to provide at least a portion of a suitable crystallizer feed to a process for making crystalline sodium carbonate, bicarbonate, and / or other derivatives. The method comprises: contacting the waste solid with a leach solution to dissolve at least one impurity and dissolving the resulting leached residue. Leaching may include heap percolation. The leach solution may comprise a crystallizer purge liquor, a process waste effluent, a mine water, or mixtures thereof. The method may further comprise adding a magnesium compound to the resulting leached residue during or after its dissolution to remove another impurity. The waste solid preferably comprises a pond solid containing such impurities. The pond solid may be recovered from a pond receiving crystallizer purge liquor(s) and / or other process waste effluent(s). The pond solid may contain sodium carbonate, any hydrate thereof, sodium bicarbonate, and / or sodium sesquicarbonate. The impurities to be removed may comprise sodium chloride, sodium sulfate, silicates, and / or organics.

The invention discloses a preparation method of high-density fused quartz ceramic. The preparation method comprises the following steps: A, mixing high-purity fused quartz powder, adding deionized water, polyvinyl alcohol, lactic acid and sodium sesquicarbonate and preparing slurry with solid content being 75 to 80 vol%; B, mixing 40 wt% of an acrylamide aqueous solution and N,N-methylene bisacrylamide, stirring and dissolving to prepare premixed liquid; C, mixing the slurry in the step A, a sintering aid and the premixed liquid in the step B, adding an initiator and preparing formed slurry; D, injecting the formed slurry prepared in the step C into a mold of a dynamic injection coagulation forming device, vibrating for 20 to 30 minutes, placing a green body and the mold into a drying oven, curing at the temperature of 72 to 78 DEG C for 3 to 4 hours, cooling, and opening the mold to obtain the required ceramic green body; E, firing and forming the green body in the step D in a high-temperature furnace at the temperature of 1175 to 1200 DEG C and preserving heat for 2 to 3 hours to prepare the required fused quartz ceramic.

Process for treating a gas contaminated by at least one element selected from the group consisting of heavy metals, organic compounds, and combinations thereof, wherein a calcium-phosphate reactant (reagent) particle comprising apatite is brought into contact with the contaminated gas at a temperature of at least 30 DEG C and preferably at most 1100 DEG C. The metal(s) and / or organic compound(s) to be removed from the contaminated gas may be selected among the list of : Al, Ag, As, Ba, Be, Bi, Ce, Co, Cd, Cu, Cr, Fe, Hf, Hg, La, Li, Mg, Mn, Mo, Ni, Pb, Pd, Rb, Sb, Se, Sn, Sr, Th, Ti, U, V, Y,Zn, Zr, VOC, aromatic compounds, PAHs, dioxins, furans, or any mixture thereof. In such process, an alkaline compound particle comprising sodium bicarbonate, sodium carbonate, sodium sesquicarbonate (trona), quick lime, hydrated lime, lime stone or combinations thereof, may be further brought into contact with the contaminated gas.

The invention relates to bath salt for relieving foot odor and a preparing method thereof. The bath salt is prepared from 10-20 parts of soybean, 5-10 parts of exocarpium benincasae, 5-10 parts of banana peel, 2-4 parts of ginger, 5-10 parts of chamomile, 5-10 parts of lavender, 3-6 parts of Chinese herbal medicine, 1-2 parts of olive oil, 30-40 parts of Himalaya salt, 1-5 parts of sodium cocoyl methyl taurate and 15-20 parts of sodium sesquicarbonate. The preparing method comprises the steps of 1, cutting and then mixing soybean, exocarpium benincasae, banana peel and ginger, and adding water for boiling; 2, conducting solid-liquid separation, and keeping filtrate for use; 3, smashing chamomile, lavender and Chinese herbal medicine into powder, and conducting uniform mixing; 4, mixing the powder obtained in the step 3 with Himalaya salt, sodium cocoyl methyl taurate and sodium sesquicarbonate; 5, adding olive oil to the mixture obtained in the step 4, conducting uniform stirring, and standing for 1-2 H; 6, adding the filtrate obtained in the step 2 to the mixture obtained in the step 5 for crystallization. The bath salt has the advantages of being capable of promoting foot blood circulation, improving foot condition, achieving sterilization, relieving itching, protecting skin and inhibiting bacteria.

The invention discloses a bath salt, which comprises the following raw materials in parts by weight: 1.2-1.8 parts by weight of ylang-ylang essential oil, 2-2.6 parts of patchouli essential oil, 30-42 parts of crystal salt, 4-6 parts of hyaluronic acid and trisodium bicarbonate 2-7, borneol 2-4, humectant 0.36-0.64, sodium laureth sulfate 0.8-1.3, polysorbate 20 2-3, licorice glabra 8-15, knotweed 6-10, rhodiola rosea 7-9, saffron 10-13, lotus leaf 5.5-9.5, aloe vera 8-13, turmeric 3-6, euphemum 4-7, white aconite 1-4. The excellent effect of the present invention is also manifested in: the present invention adopts crystal salt and various Chinese herbal medicines as main raw materials, and adds ylang-ylang essential oil and patchouli essential oil extracted from natural plants, which can effectively improve chapped skin and promote skin regeneration, thereby achieving deep Nourishes the skin.

A magnesium treatment for removing water-soluble impurities in a process for making crystalline sodium carbonate, bicarbonate, or sulfite. A waste comprising such impurities is treated with a magnesium compound to form water-insoluble matter which is removed to form a purified solution. The treatment may be performed on a solution which contains the waste and optionally dissolved calcined trona. The purified solution may be used as a feedstock to form crystalline soda ash, and / or used as a reactant to produce crystalline sodium sulfite or bicarbonate via reaction with SO2 or CO2. In preferred embodiments, the waste may comprise a purge or weak liquor, a reclaimed solid, or combinations thereof. The water-soluble impurities may be silicates and / or foam-causing impurities, and the waste may contain sodium bicarbonate, sodium sesquicarbonate, and / or one or more sodium carbonate hydrates, such as decahydrate.

A process for the production and recovery of crystalline sodium sesquicarbonate and of crystalline sodium carbonate monohydrate from aqueous liquors containing sodium carbonate and sodium bicarbonate. The crystalline products may optionally be heated or calcined to produce soda ash. The process is particularly suited for the recovery of soda ash from aqueous minewater streams obtained from solution mining of subterranean trona ore deposits.

The invention discloses osmanthus fragrans essential oil containing bath salt which comprises the components in parts by weight as follows: 1-3 parts of osmanthus fragrans essential oil, 4-8 parts of sodium laureth-6 carboxylate, 0.4-0.8 part of pentaerythritol tetrapelargonate, 20-40 parts of sodium chloride and 60-80 parts of sodium sesquicarbonate. With the adoption of the osmanthus fragrans essential oil containing bath salt, pore dirt of a human body can be removed, wrinkles are resisted, and skin color is brightened.

The invention relates to the technical field of chemical materials, and specifically relates to a humectant rich in nutrients. The humectant is composed of the following raw materials in percentage by weight: 0.3 to 0.7% of sodium benzoate, 0.4 to 0.8% of potassium sorbate, 9 to 12% of sodium sesquicarbonate, 2 to 5% of indole-3-butryic acid, 2 to 9% of gibberellic acid, 0.9 to 1.8% of aluminum sulfate, 56 to 75% of water, and 3 to 9% of carboxymethylcellulose sodium. The humectant has a good moisture-retaining effect, and is rich in nutrients, and the moisture-retaining effect can last for a long time.