Process equipment for the production of high-purity aluminum ammonium sulfate

(PDF) Increasing purity of Ammonium Nickel Sulfate

 · Increasing purity of Ammonium Nickel Sulfate Hexahydrate and production sustainability in a nickel phytomining process December 2015 Chemical Engineering Research and Design 106(8) 26-32

Development of the Technology for Producing High-Purity

 · A number of studies were performed concerning the development of aluminum sulfate production methods using kaolins and clays 5 6 .The key principles of most methods consist in firing raw material at 750850°C and leaching the fired product with a sulfuric acid solution at the pulp boiling temperature.

Method of production of high purity silica and ammonium

The present invention relates to a method of producing high purity silica and ammonium fluoride from impure silicon tetrafluoride-containing gas particularly the gas generated by acidulation for example with concentrated sulfuric acid of weak phosphoric acid from the gypsum filtration step of the wet phosphoric acid process.

Ammonium sulfate (NH4)2SO4PubChem

Ammonium sulfate is an inorganic sulfate salt obtained by reaction of sulfuric acid with two equivalents of ammonia.A high-melting (decomposes above 280℃) white solid which is very soluble in water (70.6 g/100 g water at 0℃ 103.8 g/100 g water at 100℃) it is widely used as a fertilizer for alkaline soils. It has a role as a fertilizer.

Production of high purity fatty acid salt products

What is claimed is 1. A process for the preparation of a fatty acid salt product which comprises (1) forming a reactive admixture of ingredients comprising (a) C 14-C 22 fatty acid having about 2-40 weight percent of the C 14-C 22 fatty acid content in glyceride form (b) basic alkali metal or ammonium compound and (c) aqueous medium and conducting the reaction for a period sufficient to

Synthesis of alumina from high purity alum derived from

High purity alum (>99.9 ) has been produced by the reaction of NH4Al(SO4)2 derived from coal fly ash and ammonia in water at a controlled pH and then followed by the successive crystallization.

Recycling of silver plated brass for production of high

 · S. P. Dimitrijević et al. Recycling of silver-plated brass for production of high purity copper and ultrafine 815 current density 200 A/m2 and with higher concentrations of Cu2 sulfuric acid and additives. Possibilities of using higher current densities are indicated in several papers 5 7 but the research

A closed-loop ammonium salt system for recovery of high

 · A novel ammonium salt system is proposed to recycle spent lead-acid battery paste. • Lowest contents of Fe and Ba impurities of PbCO 3 and Pb 3 O 4 products are obtained.. NH 4 Ac and HAc play a synergistic role in the leaching process of spent lead paste.. The NH 4 Ac filtrate could be re-circulated to reduce the dose of leaching reagent.. Lead recovery ratio is kept over 92.7 wt at 5th

Purification of ammoniaPuritan Products Inc.

Ultra-high purity aqueous ammonium hydroxide typically electronics grade is currently prepared in a batch process by injecting gaseous ammonia into a closed vessel containing deionized water and recirculated in a closed loop until the target concentration of about 29 weight percent ammonia

Ammonium sulfate (NH4)2SO4PubChem

Ammonium sulfate is an inorganic sulfate salt obtained by reaction of sulfuric acid with two equivalents of ammonia.A high-melting (decomposes above 280℃) white solid which is very soluble in water (70.6 g/100 g water at 0℃ 103.8 g/100 g water at 100℃) it is widely used as a

A New Production Method of Submicron Alumina Powders

 · Therefore high purity alpha alumina can be obtained by using high purity ammonium aluminum sulfate as BAS precursor instead of aluminum sulfate. In this work ammonium aluminum sulfate is used as a precursor of BAS and biopolymer "chitosan" is used as electrosteric dispersant in the precipitation process

Method of production of high purity silica and ammonium

"High Purity " when used to describe a water source or other solution used in carrying out the present invention means the material has a sufficiently low impurity level that any silica or ammonium fluoride solution ultimately recovered in accordance with the process of the present invention constitutes high purity product as hereinabove defined.

Production of high purity fatty acid salt products

What is claimed is 1. A process for the preparation of a fatty acid salt product which comprises (1) forming a reactive admixture of ingredients comprising (a) C 14-C 22 fatty acid having about 2-40 weight percent of the C 14-C 22 fatty acid content in glyceride form (b) basic alkali metal or ammonium compound and (c) aqueous medium and conducting the reaction for a period sufficient to

Introduction to Ammonia Production AIChE

 · The Linde Ammonia Concept (LAC) features a pressure-swing adsorption unit for high-purity hydrogen production and an air separation unit for high-purity nitrogen production. The Linde Ammonia Concept (LAC) is an established technology process scheme with over 25 years of operating experience in plants with capacities from 200 m.t./day to over

Urea Manufacturing ProcessChemical Engineering World

 · Liquid ammonia is pumped and carbon dioxide is compressed and transported to an equipment called reaction chamber. Since this is were the reaction happens it is the heart of the process. The pressure and temperature is maintained at 14 Mpa and °C for the first reaction to occur.

Here s what No One tells you about Comprehensive

 · The process has the characteristics of fast reaction speed and simple process but the hydrochloric acid corrodes the equipment and the subsequent waste liquid treatment cost is high. 7.4 Production of aluminum sulfate. Some Chinese Engineers have conducted research on the production of aluminum sulfate using aluminum dross as raw material.

Method of production of high purity silica and ammonium

The present invention relates to a method of producing high purity silica and ammonium fluoride from impure silicon tetrafluoride-containing gas particularly the gas generated by acidulation for example with concentrated sulfuric acid of weak phosphoric acid from the gypsum filtration step of the wet phosphoric acid process.

(PDF) Methods for High-Purity Aluminum Oxide

Methods for High-Purity Aluminum Oxide Production for Growth of Leucosapphire Crystals (Review) of aluminum sulfate and ammonium sulfate. using vacuum distillation process. The purity of

Introduction to Ammonia Production AIChE

US Patent for Process for making high-purity aluminum

A method comprising (a) reacting aluminum metal with an acid in the presence of water to provide a first aluminum salt solution comprising an aluminum salt in water wherein the aluminum salt comprises a reaction product of the acid and the aluminum metal (b) heating the first aluminum salt solution to provide a mother liquor and solid aluminum salt (c) optionally separating the solid

Novel process for the preparation of high purity alumina

Process for preparing high purity aluminas from ammonium alum the process comprising separately dehydrating the alum and thereafter thermally decomposing the dehydrate wherein the thermal decomposition is carried out by forcing a gas through a layer of the dehydrated alum so as to continuously remove the gaseous reaction products formed without removal of solids by the carrier gas and providing improved productivity of high purity transition aluminas having specific surfaces above 125 m 2 /g and/or bulk densities above 0.2 g/cm 3 the transition aluminas

USAProcess for the production of high purity

A process for the production of concentrated and highly purified hydroxylammonium nitrate is disclosed whereby diluted nitric acid is added to a solution containing excess aqueous hydroxylamine while the resultant mixture is cooled and agitated to obtain uniform mixing to avoid locally high concentrations of nitric acid. The mixed solution is maintained at a temperature of less than about 60

Methods for High-Purity Aluminum Oxide Production for

THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING Vol. 53 No. 4 2019 METHODS FOR HIGH-PURITY ALUMINUM OXIDE PRODUCTION 597

Synthesis of aluminum ammonium sulfate from waste aluminum

 · The ammonium alum is formed according to the following equation Al 2 (SO 4) 3 H 2 SO 4 2NH 3 24H 2 O→2Al(NH 4)(SO 4) 2 ·12H 2 O By the above equation the molar ratio of ammonia (NH 3) and aluminum ion would exert certain influence on the ammonium alum crystal formation. Fig. 4 displays the acid remaining aluminum ion removal and the amount of ammonium alum crystal formed

Method of processing of sodium sulfate solution produced

The closest prototype of the proposed method is "a Method of processing waste of aluminium fluoride production" (ed. St. SU 789392 from 15.01.79) including the processing gases soda solution and solid waste alkaline solution precipitation of cryolite from the resulting solution separating the precipitate followed by separation of the mother

Introduction to Ammonia Production AIChE

 · The Linde Ammonia Concept (LAC) features a pressure-swing adsorption unit for high-purity hydrogen production and an air separation unit for high-purity nitrogen production. The Linde Ammonia Concept (LAC) is an established technology process scheme with

USAProcess for production of ultra-high purity

USA US729390A USA USA US A US A US A US 729390 A US729390 A US 729390A US A US A US A US A US A US A Authority US United States Prior art keywords detected rhenium xanthate solution metal Prior art date Legal status (The legal status is an assumption and is not a

(PDF) Methods for High-Purity Aluminum Oxide Production

Methods for High-Purity Aluminum Oxide Production for Growth of Leucosapphire Crystals (Review) of aluminum sulfate and ammonium sulfate. using vacuum distillation process. The purity of

Process for making high-purity aluminum oxide

 · FIG. 1 shows a flow diagram of an example process 10 for producing high-purity aluminum oxide for example to be used in the production of synthetic sapphire. As used herein the term "high-purity aluminum oxide" refers to aluminum oxide having a purity of about 4N (99.99 pure with an impurity level of only 0.01 or 100 ppm) or greater.

Laboratory vs industrial manufacture of ammonium sulfate

 · Ammonium sulfate (NH 4) 2 SO 4 is a salt used as a fertiliser. It is a source of soluble nitrogen so it can be used as a nitrogenous fertiliser. Salts can be made in acid-base reactions

USB2Process for making high purity aluminum

A method comprising contacting high-purity acid high-purity aluminum and high-purity water to form a first solution in a heated non-contaminating vessel wherein the aluminum is employed in at least a stoichiometric amount relative to the acid heating the first solution in a non-contaminating container to provide a mother liquor and solid aluminum salts separating the solid aluminum salts

USAProcess for production of ultra-high purity

USA US729390A USA USA US A US A US A US 729390 A US729390 A US 729390A US A US A US A US A US A US A Authority US United States Prior art keywords detected rhenium xanthate solution metal Prior art date Legal status (The legal status is an assumption and is not a

Synthesis of alumina with coarse particle by precipitating

 · Very few references had mentioned "synthesis of alumina particles (including nanoparticles) from aluminum sulfate aqueous solutions". H.C. Park et al. had prepared high purity alum by reaction of Ammonium aluminum sulfate derived from coal fly ash and finer α-Al 2 O 3 with Particle size at 0.1–0.5 μm obtained by calcining alum .