sodium sulfate acid solvent cake Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US32231306A
the liquid removed from the evaporator is saturated with respect to the salt and contains some of the salt crystals in suspension. Additional salt is recovered by adding, make-up hydrated salt at this point. In the case of sodium sulfate decahydrate, this gives up its Water of crystallization above 32.5 C. so that the solution joins additional water and …
The result shows that the value of CMC in the presence of sodium salts (CMC NaCl) is greater than that of sodium sulfate (CMC Na 2 SO 4). It is because Na …
this invention is directed to a process for recovering iminodiacetic acid from an aqueous solution consisting essentially of water, iminodiacetic acid, and sodium sulfate, the mole ratio of iminodiacetic acid to sodium sulfate being 1:0.05-10, said solution having a temperature above about 33 C. and containing at least about 5% iminodiacetic, said …
US2746841A Production of boric acid and anhydrous sodium sulfate. GB757320A Improvements in or relating to separation of nickel and cobalt from acidic solution. US2801153A Recovery of lithium from spodumene ores. US2938771A Method of making hyposulfites.
Provided is a process for producing silica and sodium sulfite with sodium sulfate, wherein a mixture of quartz sand, sodium sulfate and carbon is reacted to produce solid sodium silicate and sulfur dioxide, which are used to produce silica and sodium sulfite through the following steps: (1) Said solid sodium silicate is dissolved in water and then filtered to …
flyash from commercial steam boilers containing various levels of sodium sulfate may be collected from hot flue gas streams and transferred into a collection silo 10. From the silo, the flyash can be separated by commercially known dry or wet methods, globally indicated at 12, whereby the material may be transferred into an atmospheric mixing container 14, …
Methods and apparatus pertaining to reduction of sodium sulfate to sodium sulfide include the feeding of sodium sulfate into a combustion chamber in which the sodium sulfate is exposed to a reducing atmosphere while at the same time being exposed also to a temperature above the melting point of sodium sulfide. Thus, a liquid accumulates at …
Roseane M Silva
Example I 32.8 parts (by weight) of finely divided gypsum or 26 parts of finely divided anhydrite, are dispersed in a liquor consisting of parts water, 32.89 parts ammonium chloride, 6.42 parts sodium chloride and 23.5 parts sodium sulphate. Ammonia is passed through this slurry until 8.18 parts of ammonia have been absorbed. Carbon dioxide is …
The sodium sulfate decahydrate was by far the most consistent Nearly every profile was almost identical to that shown in figure 7. The recalescence period was so short that the …
The sodium sulfate that contains crystal water is commonly called as saltcake.Be mainly derived from the by product of mineral, salt lake and preparing salt by working up seawater.Also there are some production processes to pay product sodium sulfate in the chemical industry.For example a factory that produces 5000 tons of synthetic fatty acids …
The sodium sulfate molecule consists of two sodium atoms (Na), one sulfur atom (S), and four oxygen atoms (O). The molecule adopts a highly symmetrical structure, which …
A process for making potassium carbonate and sodium sulphate which consists in treating with carbon dioxide a suspension of a carbonate of an alkali earth metal selected from the group consisting of barium and strontium in an aqueous solution of potassium sulphate, separating the alkali earth metal sulphate thus formed from the solution. of ...
It changes to sulfuric acid and sulfates in the air. Sulfates are a large part of the haze pollution that irritates the lungs and affects your lung health. Dry skin. Dry skin is a …
KR960007454A Method of Purifying Sodium Sulfate (Na₂SO₄) CN1321200C Method for separating copper, arsenic and zinc from copper-smelting high-arsenic flue dust sulphuric acid leach liquor. CA2162191A1 Process for Removing Sodium Chloride and Potassium Salts from Ash Collected from a Soda …
1. a process for recovering sodium sulfate from glauberite, which comprises hydrolyzing an aqueous slurry of glauberite at temperatures between 15*c. and 30*c. to form a slurry of insoluble sodium sulfate decahydrate and gypsum, raising the temperature of a slurry of the sodium sulfate decahydrate to between 33*c. and 1000 c. to form a soluble …
The present invention relates to a kind of preparation methods of nontoxic, widely used fatty alcohol sulfate salt form anion surfactant.The present invention directly uses sulfamic acid and laruyl alcohol for raw material, and preparation lauryl sodium sulfate is stirred to react under the catalysis of acidic ion liquid and urea.That the present invention provides a …
FIG. 1 shown is a graphical representation of the solubility curves for sodium bicarbonate, ammonium sulfate and sodium sulfate. The data are expressed as a function of solution temperature. As is evident from the drawing, the solubility of the bicarbonate and the sodium sulfate have an overlapping area in which there will be a precipitation of both of …
The preparation method of this anhydrous sodium sulphate be with purity be 96%, water content be 2% Industrial Salt pulverize the back by 0.3mm sieve the 1000Kg Industrial Salt, be that 98% the vitriol oil is with at present in Reaktionsofen with itself and 700Kg concentration, at the chemical reaction that carries out under 500～600 ℃ the …
FIELD: chemistry of surface-active substances, chemical technology. SUBSTANCE: invention relates and describes a method for preparing sodium lauryl sulfate of high purity degree. Method involves the sulfatization reaction of lauryl alcohol with chlorosulfonic acid, desorption of hydrogen chloride by vacuum evaporation at temperature 35-40°C and …
A process for the preparation of anhydrous sodium from a thenardite ore containing sodium sulfate comprising the steps of: crushing the thenardite ore; lixiviating the crushed ore in a first lixiviation step with water or with an exhausted solution from a succeeding step, at a temperature between about 28° C. and 40° C., obtaining a suspension comprising a …
the proposed process is realized as follows: The conversion of potash 10 and sodium sulfate 46 and/or 76 to potassium sulfate 42 is carried out in two reaction stages. In the first stage, or glaserite production stage, 14, the reaction can be effected at 15°-100° C. But, while reaction kinetics and crystal growth rate improve with increasing temperature, …
US4246241A Process for selective removal of sodium sulfate from an aqueous slurry. US3800026A Method for preparing sodium chloride brine. US4032616A Process for the production of sodium bicarbonate from diaphram cell liquors. CA1078138A Production of chlorine dioxide.
Process for making crystalline sodium sulfate, said process comprising the steps of (a) combining an aqueous solution containing sulfates of nickel and at least one metal selected from cobalt and manganese with an aqueous solution of sodium hydroxide or sodium carbonate, respectively, in a stoichiometric ratio of about 1 : 2, optionally in the presence …
The importance of tissue sulfate concentrations in regulating 3'-phosphoadenosine 5'-phosphosulfate (PAPS) synthesis is not known. Therefore, this study was conducted to …
Patented Apr. 11, 1950 PROCESS FOR PRODUCING ANHYDROUS SODIUM SULFATE James V. Wiseman, Lynn A. Blackmun, and Henry D. Hellmers, Westend, Calif., assignors to West End Chemical Company, a corporation of California Application August 30, 1948, Serial No. 46,904. 4 Claims. This invention relates to the concentration of solutions of …
US2055284A Method of producing sodium aluminum sulphate. US2631102A Monocalcium phosphate leavening composition and method of producing same. US2111460A Alkali metal titanates. US3433586A Process for the manufacture of magnesium hydrogen-phosphate trihydrate.
The reduction of sodium, sulfate to-sodium sulfide is usually carried out either with coal or with reducing gases. When reducing with coal the operation is carried out at temperatures of about 1000 C. in flame furnaces, shaft furnaces or rotary tubular furnaces, and a crude melt is obtained which contains, besides sodium sulfide, also sulfate, sulfite, …
The sodium sulfate content of the particulate amorphous precipitated silica of the present invention is from 5 to 10 percent by weight based on the weight of silica, sodium sulfate, and water. Preferably the sodium sulfate content is from 6 to 8 percent by weight on the same basis. As used herein and in the claims the weight percent of sodium ...
The present invention relates to a formic acid and sodium sulfate producing method with sodium formate and sulfuric acid as raw material. The said method has the merits of simple equipment, low power consumption, high formic acid yield and high sodium sulfate quality. It features that product is separated in solid-liquid …
sulphate sodium sulphate solution calcium carbonate mother liquor Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US187338A
