Preparation process of large-grain ammonium sulfate crystals
Ammonium sulfate, English Ammonium sulfate by name, molecular formula is (NH 4) 2 SO 4 Soluble in water, be insoluble to ethanol, acetone and other organic solvent.Solubleness in the water: 70.6g/100g water in the time of 0 ℃, 78.0g/100g water in the time of 30 ℃, 103.0g/100g water in the time of 100 ℃.Ammonium sulfate belongs to white rhombic system crystal, if …
DE102012101702B4
Process for the continuous production of a coarse ammonium sulfate product (particle size d 'in the range 2.0-3.0 mm, in particular 2.3-2.5 mm) by crystallization of an ammonium sulfate solution in a crystallization stage operated according to the DTB principle, in which a suspension of mother liquor and ammonium sulfate crystals is continuously circulated in an internal circulation upon ...
Synthesis of alumina with coarse particle by precipitating …
The uniformity particle size distribution (PSD) and coarse particle size of alumina were synthesized by precipitating aluminum ammonium sulfate solution with ammonia.
Preparation of Ferrous Ammonium Sulphate
Procedure. Weigh 7 g of ferrous sulfate and 3.5 g of ammonium sulfate separately. Mix ferrous sulfate and ammonium sulfate in water in a beaker containing dilute sulphuric acid.; Gently warm the solution in order to get a clear solution. Filter the solution in order to remove suspended impurities and concentrate the clear filtrate by heating it china dish over a sand bath till the ...
US20130230446A1
Method for the production of a coarse-grained ammonium sulphate product by crystallization and installation for carrying out the method. A method for the continuous production of a coarse-grained ammonium sulphate product from an ammonium sulphate solution in a crystallizer operates in accordance with the DTB principle and has an internal suspension circuit and a …
Production of coarse-crystalline ammonium sulfate
Following a brief survey of work on the production of coarse-crystalline ammonium sulfate, a description is given of the isohydric crystallization method, which can produce coarse (1 to 3 …
8.4 Ammonium Sulfate
8.4 Ammonium Sulfate 8.4.1 General1-2 Ammonium sulfate ([NH4]2SO4) is commonly used as a fertilizer. In 1991, U. S. facilities produced about 2.7 million megagrams (Mg) (3 million tons) of ammonium sulfate in about 35 plants. Production rates at these plants range from 1.8 to 360 Mg (2 to 400 tons) per year. 8.4.2 Process Description1
SAFETY DATA SHEET AMMONIUM SULPHATE
AMMONIUM SULPHATE Page 1 Issued: 12/11/2014 Revision No: 1 1. IDENTIFICATION OF THE SUBSTANCE / PREPARATION AND OF THE COMPANY / UNDERTAKING Product identifier: Product name: AMMONIUM SULPHATE Product No.: 101270, 106097, 106550, 107377, 107378, 114456, 114457 Synonyms, Trade Names: AMMONIUMSULFAT MIN 99, 6%, …
Effect of Supersaturation on the Particle Size of Ammonium …
To crystallize ammonium sulfate (AS) of a coarse fraction of 1 to 3 mm size, a semibatch evaporative crystallization mode was applied. The crystal size was controlled by …
Optimization of ammonium sulfate crystals based on orthogonal design
The two main peaks of ammonium sulfate at 20.538° and 22.902° correspond to (1 1 1) and (0 0 2) crystal faces, respectively. According to relevant literature reports, the (1 1 1) and (0 0 2) crystal faces of ammonium sulfate have higher binding energy with Fe 3+, which may inhibit the growth of sulfuric acid crystal faces [29], [30].
Patents Assigned to Gea Messo
Abstract: A method and installation for the production of a coarse-grained ammonium sulfate product by crystallization includes firstly generating a crystal having a grain smaller than the desired grain size in a pre-crystallizer and withdrawing a suspension therefrom, from which the fine crystal was previously separated in a classification ...
8.4 Ammonium Sulfate
After being dried, the ammonium sulfate crystals are screened into coarse and fine crystals. This screening is done in an enclosed area to restrict fugitive dust in the building. Ammonium …
Crystallization kinetics and crystallization process of …
In the alumina topological transformation, the crystal morphology is inherited from the precursor material [12]. Crystallization of pseudoboehmite from ammonium aluminum sulfate solution by ammonia neutralization is a key step in the new process [13]. However, it is difficult to obtain coarse-grained pseudoboehmite products because of the ...
American Plant Food Corporation
AMMONIUM SULFATE - All APF AMS Products Granular, Coarse, Standard, N-Rich, S-Sul, Solugreen, M-Pac and N-Pac Revision date: 1/9/2015 Version 2.0 C Page 1 1. Product and Company Identification Company 24 Hour Emergency Response Information American Plant Food Corporation CHEMTREC: 1-800-424-9300 903 Mayo Shell Road American Plant Food: 1 …
Integrated process for potassium sulfate and a …
Relatively pure and coarse crystalline potassium sulfate of about 52 wt % K2O content and almost chlorine free has been obtained by reacting commercial potassium chloride and commercial ammonium sulfate in a stirred tank ... and …
WO2009077346A1
In the production of coarse-grained ammonium sulfate in a DTB crystallizer 3 the targeted grain size of the crystallisate undergoes strong cyclic fluctuations in the suspension removed from the crystallizer. Following separation of mother lye in a centrifuge 7 the resulting crystallisate is usually dried in a dryer 8, then the unwanted fines are separated on a sieving plant 9.
US4276052A
A method of crystallizing a solution of aluminium sulphate to form crystal agglomerates having an essentially uniform grain size and being in the form of granules having a characteristic appearance and good storage properties. A solution having a temperature of 105°-115° C. and a concentration of 14.5-16.8% by weight of Al 2 O 3 is brought to crystallize onto a bed of …
Optimization of Ammonium Sulfate Crystals Based on …
DOI: 10.1016/J.JCRYSGRO.2021.126217 Corpus ID: 236265242; Optimization of Ammonium Sulfate Crystals Based on Orthogonal Design @article{Li2021OptimizationOA, title={Optimization of Ammonium Sulfate Crystals Based on Orthogonal Design}, author={Lu Li and Bang-fu Huang and Gui Fang Zhang and Defu Wang and Meng Dai and Zhengyu Yang and Chunliang Wang}, …
Optimization of Ammonium Sulfate Crystals Based on
Coarse AS crystals can be obtained at supersaturation of 0.02–0.06 in seeded semibatch evaporation crystallization. ... and different forms of ammonium sulfate crystal were obtained. The ...
Effect of Supersaturation on the Particle Size of …
To crystallize ammonium sulfate (AS) of a coarse fraction of 1 to 3 mm size, a semibatch evaporative crystallization mode was applied. The crystal size was controlled by supersaturation.
Ammonium Sulfate 21-0-0 Fertilizer 50 lb bag
As its name and chemical formula denote, Simplot's Ammonium Sulfate is a two-in-one fertilizer. Its crystal form, and 21-0-0 analysis are one of agriculture's most enduring and trusted solid forms of fertilizer. - Quick acting form of water …
Ammonium Sulfate
crystal size d50 0.8-1.4 mm crystal size d50 0.9-1.1 mm medium to large plants large plants ammonia injection critical easy ammonia injection opportunity to separate light fractions like lactam oil Table 1: summary of performance Granular ammonium sulfate
Crystallization Of Ammonium Sulphate: State Of The Art …
Typical processes where Ammonium Sulphate (AS) is recovered are the nylon industries, the methyl-metacrilate and the acronitrile production. Reactive and/or evaporation crystallization …
WO2009095357A1
The invention proposes a process and an apparatus for the production of coarse ammonium sulphate, which comprises a DTB crystallizer (1) which has a line (7) for an external dissolution circuit. The ammonium sulphate to be used is provided in the form of concentrated sulphuric acid (9) and ammonium (10) which are separately fed directly into the line (7).
Production of coarse crystalline ammonium sulfate by the …
Journal Article: Production of coarse crystalline ammonium sulfate by the saturator process
Increasing Productivity of Ammonium Sulfate …
After dividing by ∆L∆t and taking the limit of both ∆L and ∆t going to zero, the equation can be cast in the form of a differential equation, () =∑Qinnin −∑Qoutnout dL d Gn V (2) where G is the crystal growth rate [m/s], V is crystallizer volume [m3] and Q is volumetric flow rate [m3/s].A generic crystallizer model with fines dissolution and product classification (Wibowo et al ...
Nucleation and growth of ammonium sulphate crystals …
The refractive index, density and viscosity of aqueous solutions of ammonium sulphate have been measured in the range 20-30°. The solubility of ammonium sulphate was checked over the range 20-45° by measuring saturation temperatures in a simple apparatus. The same technique was also used for nucleation studies; the maximum allowable undercoolings …
Production of coarse ammonium sulfate crystal
PROBLEM TO BE SOLVED: To stably obtain coarse ammonium sulfate crystal by catching the existing quantity or the existing ratio of a crystal having a certain particle diameter to exist in the crystallization kettle and to flow-in an outer circulating line and controlling the value thereof. SOLUTION: An existing quantity or an existing ratio of a crystal (primary nucleus, secondary …
Method for producing a coarse-grained ammonium sulfate …
EP 0632738 B1, which is a generic type, discloses a continuous crystallization method, in which a coarse-grained ammonium sulphate crystallizate can be produced from an oversaturated, …
Safety data sheet
Product: Ammonium sulfate special grade (ID no. 30042199/SDS_GEN_IT/EN) Date of print 28.01.2025 SECTION 1: Identification of the substance/mixture and of the company/undertaking 1.1. Product identifier Ammonium sulfate special grade Chemical name: Ammonium sulphate CAS Number: