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sodium sulphate process

Sodium Sulfate - an overview ScienceDirect Topics

In this process, sodium sulfate values from the spin bath are recovered via an evaporative crystallization step. The mother liquor from the evaporation step is returned back to the spin bath. Solid sulfate from the crystallizer, typically Glauber salt, is then dissolved in water and purified to remove metals such as Ca, Mg, and Zn. The purified sulfate solution is then fed to the acid

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US3706531A - Process for the manufacture of sodium ...

sodium sulphate is made from a solution of the ferrous sulphate by product of titanium dioxide manufacture, by precipitating iron hydroxide with sodium hydroxide, removing the iron hydroxide, precipitating part of the sodium sulphate formed in the solution by adding more sodi- um hydroxide and recycling the residual liquor to the iron hydroxide precipitation stage.

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Sodium sulfate Na2SO4 - PubChem

The Mannheim process produces sodium sulfate by reaction of sodium chloride and sulfuric acid. This reaction takes place in a fluidized-bed reactor or a specially made furnace called a Mannheim furnace. This method was last used in the United States in the 1980s. In another process, SO2, O2, and H2O react with NaCl. This is called the Hargreaves process. Only a

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CN1277153A - Production process of anhydrous sodium ...

The anhydrous sodium sulfate producing process of direct reaction between sodium chloride and concentrated sulfuric acid includes the following steps: crushing and sieving industry salt; high temperature reaction of salt with concentrated sulfuric acid in the weight ratio of 1 to 0.7 in a reactor to produce sodium sulfate and HCl gas; and cooling and crushing produced sodium

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Sodium Sulphate - an overview ScienceDirect Topics

Sodium sulfate is produced on a very large scale as a by-product of several important industrial processes. In many cases, disposal of this material is difficult. As a result, there have been many efforts to use electrolytic salt splitting to recover both sulfuric acid and sodium hydroxide. Because of major technical and economic problems, none of these efforts has been

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US2321218A - Production of sodium sulphate - Google Patents

This is preferably accomplished by adding sodiumsbisulphite to the solution and expelling the nitrous gases and S02 by heating the solution to the boiling point. Thereafter residual vS02 and the ferrous iron in the solution are oxidized, for example by means of potassium permanganate.

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Desmet Ballestra - Sodium Sulphate

Sodium Sulphate. Sodium Sulphate Plants Technology. Desmet Ballestra offers plants with proprietary technology developed in cooperation with Marchi Industriale and based on Manheim process. The process is based on the endothermic reaction between H 2 SO 4 and NaCl that takes place under temperature control in the Mannheim furnace.

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A Fluidization Process for Making Sodium Sulphate From ...

isation to the Hargreaves process for making sodium sulphate from sodium chloride* The more important commercial methods of immfacturing sodium sulphate are described together with their advantages and disadvantages in order to provide

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DE3801382A1 - Process and plant for converting sodium ...

There is described a process and a plant for the simple, cheap and environmentally friendly conversion of sodium sulphate into sodium hydroxide, in which, in at least two precipitation steps, the sulphate ions of the aqueous sodium sulphate solution are precipitated as sparingly soluble calcium sulphate by means of a calcium hydroxide suspension and are removed by

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Sodium sulfate - Wikipedia

With US pricing at $30 per tonne in 1970, up to $90 per tonne for salt cake quality, and $130 for better grades, sodium sulphate is a very cheap material. The largest use is as filler in powdered home laundry detergents, consuming approx. 50% of world production. This use is waning as domestic consumers are increasingly switching to compact or liquid detergents that do not include sodium sulfate.

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Sodium Sulfate - an overview ScienceDirect Topics

Sodium sulfate is produced on a very large scale as a by-product of several important industrial processes. In many cases, disposal of this material is difficult. As a result, there have been many efforts to use electrolytic salt splitting to recover both sulfuric acid and sodium hydroxide. Because of major technical and economic problems, none of these efforts has been

More

CN1277153A - Production process of anhydrous sodium ...

The anhydrous sodium sulfate producing process of direct reaction between sodium chloride and concentrated sulfuric acid includes the following steps: crushing and sieving industry salt; high temperature reaction of salt with concentrated sulfuric acid in the weight ratio of 1 to 0.7 in a reactor to produce sodium sulfate and HCl gas; and cooling and crushing produced sodium

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(PDF) Processing of sodium sulphate solutions using the ...

Processing of sodium sulphate solutions using the EED method: From a batch toward a continuous process.pdf. Available via license: CC BY-NC-ND 4.0. Content may be subject to copyright. 54 Pol. J ...

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Sodium sulfate Na2SO4 - PubChem

The Mannheim process produces sodium sulfate by reaction of sodium chloride and sulfuric acid. This reaction takes place in a fluidized-bed reactor or a specially made furnace called a Mannheim furnace. This method was last used in the United States in the 1980s. In another process, SO2, O2, and H2O react with NaCl. This is called the Hargreaves process. Only a

More

Desmet Ballestra - Sodium Sulphate

Sodium Sulphate Plants Technology Desmet Ballestra offers plants with proprietary technology developed in cooperation with Marchi Industriale and based on Manheim process. The process is based on the endothermic reaction between H 2 SO 4 and NaCl that takes place under temperature control in the Mannheim furnace. With Na 2 SO 4 production is associated the

More

Sodium Sulphate - an overview ScienceDirect Topics

Sodium sulfate is produced on a very large scale as a by-product of several important industrial processes. In many cases, disposal of this material is difficult. As a result, there have been many efforts to use electrolytic salt splitting to recover both sulfuric acid and sodium hydroxide. Because of major technical and economic problems, none of these efforts has been

More

US2321218A - Production of sodium sulphate - Google Patents

sodium sulphate sodium acid sulphate Prior art date 1940-06-14 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 US340475A Inventor Charles L Levermore Current Assignee (The listed assignees

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EP2172429A1 - Method for the production of sodium sulphate ...

This invention refers to a novel process to obtain magnesium hydroxide and sodium sulfate from a solid raw material, which contains sodium and magnesium soluble salts, preferably in the form of sulfates, coming from a natural source or as a byproduct of an industrial process. The process consisting in the conditioning of the raw material to guarantee the correct

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DE3801382A1 - Process and plant for converting sodium ...

There is described a process and a plant for the simple, cheap and environmentally friendly conversion of sodium sulphate into sodium hydroxide, in which, in at least two precipitation steps, the sulphate ions of the aqueous sodium sulphate solution are precipitated as sparingly soluble calcium sulphate by means of a calcium hydroxide suspension and are removed by

More

Sodium sulfate - Wikipedia

Sodium sulfate (also known as sodium sulphate or sulfate of soda) is the inorganic compound with formula Na 2 SO 4 as well as several related hydrates.All forms are white solids that are highly soluble in water. With an annual production of 6 million tonnes, the decahydrate is a major commodity chemical product. It is mainly used as a filler in the manufacture of powdered home

More

Sodium Sulfate - an overview ScienceDirect Topics

Sodium sulfate is produced on a very large scale as a by-product of several important industrial processes. In many cases, disposal of this material is difficult. As a result, there have been many efforts to use electrolytic salt splitting to recover both sulfuric acid and sodium hydroxide. Because of major technical and economic problems, none of these efforts has been

More

CN1277153A - Production process of anhydrous sodium ...

The anhydrous sodium sulfate producing process of direct reaction between sodium chloride and concentrated sulfuric acid includes the following steps: crushing and sieving industry salt; high temperature reaction of salt with concentrated sulfuric acid in the weight ratio of 1 to 0.7 in a reactor to produce sodium sulfate and HCl gas; and cooling and crushing produced sodium

More

(PDF) Processing of sodium sulphate solutions using the ...

Processing of sodium sulphate solutions using the EED method: From a batch toward a continuous process.pdf. Available via license: CC BY-NC-ND 4.0. Content may be subject to copyright. 54 Pol. J ...

More

Sodium sulfate Na2SO4 - PubChem

The Mannheim process produces sodium sulfate by reaction of sodium chloride and sulfuric acid. This reaction takes place in a fluidized-bed reactor or a specially made furnace called a Mannheim furnace. This method was last used in the United States in the 1980s. In another process, SO2, O2, and H2O react with NaCl. This is called the Hargreaves process. Only a

More

Desmet Ballestra - Sodium Sulphate

Sodium Sulphate Plants Technology Desmet Ballestra offers plants with proprietary technology developed in cooperation with Marchi Industriale and based on Manheim process. The process is based on the endothermic reaction between H 2 SO 4 and NaCl that takes place under temperature control in the Mannheim furnace. With Na 2 SO 4 production is associated the

More

Sodium Sulphate - an overview ScienceDirect Topics

Sodium sulfate is produced on a very large scale as a by-product of several important industrial processes. In many cases, disposal of this material is difficult. As a result, there have been many efforts to use electrolytic salt splitting to recover both sulfuric acid and sodium hydroxide. Because of major technical and economic problems, none of these efforts has been

More

US2321218A - Production of sodium sulphate - Google Patents

sodium sulphate sodium acid sulphate Prior art date 1940-06-14 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 US340475A Inventor Charles L Levermore Current Assignee (The listed assignees

More

EP2172429A1 - Method for the production of sodium sulphate ...

This invention refers to a novel process to obtain magnesium hydroxide and sodium sulfate from a solid raw material, which contains sodium and magnesium soluble salts, preferably in the form of sulfates, coming from a natural source or as a byproduct of an industrial process. The process consisting in the conditioning of the raw material to guarantee the correct

More

DE3801382A1 - Process and plant for converting sodium ...

There is described a process and a plant for the simple, cheap and environmentally friendly conversion of sodium sulphate into sodium hydroxide, in which, in at least two precipitation steps, the sulphate ions of the aqueous sodium sulphate solution are precipitated as sparingly soluble calcium sulphate by means of a calcium hydroxide suspension and are removed by

More

Sodium sulfate - Wikipedia

Sodium sulfate (also known as sodium sulphate or sulfate of soda) is the inorganic compound with formula Na 2 SO 4 as well as several related hydrates.All forms are white solids that are highly soluble in water. With an annual production of 6 million tonnes, the decahydrate is a major commodity chemical product. It is mainly used as a filler in the manufacture of powdered home

More