Abstract Glauberite gypsum is the by product tailings produced by leaching sodium sulfate in the with industrial by product gypsum such as desulfurized gypsum and phosphogypsum it has higher impurity content lower purity and utilization gypsum was purified by acid leaching recrystallization process

phosphogypsum production of potassium sulfate in saudi arabia

Saudi Arabia potassium sulfate grinding production line This customer is a well known compound fertilizer manufacturer in Saudi Arabia He wants to process potassium sulfate as a compound fertilizer material but requires large processing capacity low production cost and realization of the drying function A احصل على السعر

Investigation of Process Parameters of Phosphogypsum for Preparing

Preparing calcium sulfoaluminate cement CAS from solid waste phosphogypsum PG instead of natural gypsum is an effective way to utilize solid waste In this paper CAS clinker was successfully prepared from PG and the mineral content of calcium sulfoaluminate C4A3S¯ in the sample was above 65% The effects of raw material ratio calcination temperature and time on clinker

Process for Producing Sodium Sulphate From Phosphogypsum

a process for producing sodium sulphate from phosphogypsum comprising a step of lixiviation of phosphogypsum by means of a basic solution so as to obtain a sodium sulphate solution containing metal impurities said basic solution comprising a chelating agent suitable for forming complexes with at least one part of said metal impurities at …

Potassium sulfate from phosphogypsum

principle and process of preparing potassium using potassium chloride and phosphogypsum as raw materials potassium sulfate was prepared by one stage and ammonia were chosen as mediums by orthogonal experiments the effects of reaction time reaction temperature ethanol density ammonia density and raw material ratio to product quality conversion of k2o and crystal were discussed

Technical Application by K Technologies Inc include

Production of potassium salts via ion exchange processes including potassium sulfate potassium phosphates potassium carbonate and potassium nitrate Production of potassium hydroxide using a modified ion exchange technique to allow for lower cost feedstocks and non electrolytic production techniques

Conversion of phosphogypsum to potassium sulfate DeepDyve

Solubility of calcium sulfate in concentrated aqueous chloride solutions is of particular significance in chloride hydrometallurgy and various crystallization processes such as the production of potassium sulfate from phosphogypsum and potassium chloride This paper examines an example of the second type of application in which gypsum and potassium chloride are reacted to form K 2 SO 4

A New Process for Producing Potassium Sulfate from Phosphogypsum

A new process for producing potassium sulfate from phosphogypsum is reacts with ammonium hydrocarbonate at 5 30℃ to obtain ammonium sulfate solution then the solution reacts with potassium chloride at 30℃ with adding an organic solvent to produce potassium reaction temperature has the advantages of easy separation of solid from liquid for the obtained

Prepared for Potassium Sulfate of the Orthogonal Test in K Feldspar

Prepared for Potassium Sulfate of the Orthogonal Test in K Feldspar Phosphogypsum Coke System Abstract The four factors such as alcium silicon proportion coke dosage burned time and the addition of solubilizer are studied in poorer oxidative atmosphere at 1200 °C

Research of new process preparing potassium sulfate from phosphogypsum

Meanwhile the process of potassium sulphate prepared from phosphogypsum in the system of ethanol and ammonia was also investigated The optimum conditions was obtained 6%

Ammonium sulfate preparation from phosphogypsum waste

The phosphogypsum representative sample is prepared by grinding using a blending mill and quartering method The separated sample by quartering is milled to −200 mesh size The pulverized sample is then subjected to the analysis the treatment and the preparation of ammonium sulfate using the suitable techniques Experimental procedures

Comparative study of K2SO4 production by wet conversion from

In fact this production is mainly realized by wet process attacking the phosphate rock by sulfuric acid according the following chemical reaction 1 Ca5F PO4 3 5H2SO4 10H2O → 3H3PO4 5CaSO4·2H2O HF The nature and the characteristics of the obtained PG depend strongly on the phosphate ore composition and quality

Process for producing sodium sulphate from phosphogypsum

The present invention relates to a process for producing sodium sulphate from phosphogypsum comprising a step 101 of lixiviation of phosphogypsum by means of a basic solution so as to obtain a sodium sulphate solution S containing metal impurities said basic solution comprising a chelating agent suitable for forming complexes with at least one part of said metal impurities at least one

Process for Producing Sodium Sulphate From Phosphogypsum

The present invention relates to a process for producing sodium sulphate from phosphogypsum comprising a step 101 of lixiviation of phosphogypsum by means of a basic solution so as to obtain a sodium sulphate solution S containing metal impurities said basic solution comprising a chelating agent suitable for forming complexes with at least one part of said metal impurities at least one

CN102372292A Technology for preparing potassium sulfate with

The invention discloses a technology for preparing potassium sulfate with a potassium rich mother liquid and phosphogypsum The technology comprises the steps of crushing and grinding potash feldspar so as to obtain raw ore powder which is then subjected to sintering water immersion desilication and sodium removal thus obtaining a potassium rich mother liquid mainly composed of potassium

Conversion of phosphogypsum to potassium sulfate SpringerLink

Solubility of calcium sulfate in concentrated aqueous chloride solutions is of particular significance in chloride hydrometallurgy and various crystallization processes such as the production of potassium sulfate from phosphogypsum and potassium chloride This paper examines an example of the second type of application in which gypsum and potassium chloride are reacted to form K2SO4 The

PDF Optimization of Experimental Conditions in Single Stage Process for

Abu Eishah [29] studied the preparation of potassium sulphate from phosphogypsum and potassium chloride using aqueous solutions containing 33 wt % and 7 wt % methanol and The maximum conversion of KCl to K2SO4 obtained under these conditions was % Mientkaand Grzmil [30] studied the effect of adding methanol to the mixture at ambient

Process for producing sodium sulphate from phosphogypsum

a process for producing sodium sulphate from phosphogypsum comprising a step of lixiviation of phosphogypsum by means of a basic solution comprising a chelating agent so as to obtain a sodium sulphate solution containing metal impurities wherein at least one part of said metal impurities form complexes with the chelating agent at least one …

Principle And Process Of Preparing Potassium Sulfate From Phosphogypsum

A New Process for Producing Potassium Sulfate from A new process for producing potassium sulfate from phosphogypsum is describedPhosphogypsum reacts with ammonium hydrocarbonate at 530℃ to obtain ammonium sulfate solution then the solution reacts with potassium chloride at 30℃ with adding an organic solvent to produce potassium sulfateLow …

Materials Free Full Text The Influence of CaO and MgO on the

CaO and MgO are both reported as effective activators for blast furnace slag However the synergistic effect of these two components on the mechanical properties of alkali activated blast furnace slag remains unclear In this study the flexural and compressive strengths of alkali activated blast furnace slag powder with MgO and CaO range from 0% to 30% by the mass ratio of alkali activated

A Simple and Efficient Method for Preparing High Purity α CaSO

Phosphogypsum PG is mainly composed of CaSO 4 ·2H 2 O DH which accounts for approximately 90% of its components and is a waste residue produced by the limestone gypsum wet process using phosphoric acid technology [1 2] PG waste is produced at a rate of 5 tons of PG per ton of phosphoric acid and amounts to approximately 200 million tons per year worldwide [3 4 5]

PDF Ammonium sulfate preparation from phosphogypsum waste ResearchGate

moreover the optimum conditions of the ammonium sulfate preparation are 10 g of the suspended impure or purified phosphogypsum in 40 ml of 3% ammonium sulfate solution as initiator 1/

Preparation of high performance lightweight materials based on the

Preparation process of foamed concrete lightweight building materials Preparation of α calcium sulfate hemihydrate from phosphogypsum in CaCl 2 solution under atmospheric pressure Temperature effect on phosphogypsum conversion into potassium fertilizer K 2 SO 4 and portlandite Nanotechnol Environ Eng 6

Phosphogypsum Transition to α‐Calcium Sulfate Hemihydrate in ACerS

Preparation of α calcium sulfate hemihydrates α HH from phosphogypsum PG under atmospheric pressure has been a promising way to utilize PG In this study the phase transition from PG the main composition is calcium sulfate dihydrate DH to α HH is investigated in NaCl solutions with different concentrations and reaction temperatures

PDF Conversion of phosphogypsum to potassium sulfate and calcium

Abstract The dissociation of the phosphogysum by the liquid route which is the object of our work is most appropriate and little expensive Indeed it leads to materials of direct application The present work has for objective to study the

Temperature effect on phosphogypsum conversion into potassium

This is because portlandite Ca OH 2 Kps = × 10 −6 at 25 °C is less soluble than PG Kps = × 10 −5 at 25 °C The mixtures were put under stirring during one hour A white precipitates Ca OH 2 are formed They are separated from the solution by simple filtration and afterward dried in an oven at 60° C

Process for producing sodium sulphate from phosphogypsum

The present invention relates to a process for producing sodium sulphate from phosphogypsum comprising a step 101 of lixiviation of phosphogypsum by means of a basic solution so as to obtain a sodium sulphate solution S containing metal impurities said basic solution comprising a chelating agent suitable for forming complexes with at

Dr J M Saini Deputy Manager LinkedIn

Calcium carbonate was also present in these soils ranging from traces to as high as percent The distribution of the different forms of the potassium water soluble exchangeable non exchangeable and total potassium in these soils ranged from 8 to 58 kg ha 1 127 to 263 kg ha 1 442 to 828 kg ha 1 and to per cent respectively

Batch Preparation of High Basicity Polyferric Sulfate by Hydroxide

An experimental study was carried out on the batch preparation of high basicity polyferric sulfate PFS by hydroxide substitution from bipolar membrane electrodialysis BMED with BP A configuration Effects of operation time current density and molar feed ratio of FeSO4 to H2SO4 on PFS properties were investigated Results show that increasing operation time and molar feed ratio may

Process for Preparing Potassium Peroxydisulfate Fmc Corp Us

What is claimed is 1 In the process for preparing potassium peroxydisulfate which comprises reacting substantially stoichiometric amounts of one mole of ammonium peroxydisulfate and one mole of potassium sulfate in an aqueous medium for formation of the potassium peroxydisulfate and cooling the resulting solution and recovering potassium peroxydisulfate the improvement which comprises