Category Archive for "Year 2012 Issue 5"

Physicochemical properties of fertilizers avaliable on market and possibility of production of blended fertilizers

Physicochemical properties of fertilizers avaliable on market and possibility of production of blended fertilizers BISKUPSKI A., SCHAB S., MYKA A., DAWIDOWICZ M. Please cite as: CHEMIK 2012, 66, 5, 541-548 The paper discusses the methods and the results of research of physical and chemical compatibility of selected fertilizer mixtures and the evaluation of their possibility for production of blended fertilizers. Keywords: mixed fertilizer, blended fertilizer, USP, chemical compatibility, physical compatibility Read more:

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Studies on the screw granulation of fertilizers on the base of urea and calcium sulfate adduct

Studies on the screw granulation of fertilizers on the base of urea and calcium sulfate adduct BOROWIK M. MALINOWSKI P., BISKUPSKI A., DAWIDOWICZ M., SCHAB S., RUSEK P. Please cite as: CHEMIK 2012, 66, 5, 535-540 Results of studies on preparation possibility of fertilizers of calcium sulfate and urea type from phosphogypsum with screw granulation method are presented. One screw extruder was used in the studies. It was found that products of high degree of urea conversion into the adduct form (over 80%) can...

Production technology of nitrogen-sulphur-calcium fertilizers on the base of urea and phosphogypsum

Production technology of nitrogen-sulphur-calcium fertilizers on the base of urea and phosphogypsum BOROWIK M., MALINOWSKI P., BISKUPSKI A., DAWIDOWICZ M., SCHAB S., RUSEK P., IGRAS J., KĘSIK K. Please cite as: CHEMIK 2012, 66, 5, 525-534 Studies on preparation possibility of granular fertilizers of calcium sulfate and urea adduct type by granulation of urea-phosphogypsum pulp were carried out. The effect of various additives on granule hardness of this type fertilizers was investigated. It was found that addition of magnesium sulfate in various forms increased...

Granulation of sodium silicates by pressing method

Granulation of sodium silicates by pressing method KUŻDŻAŁ E., WALAWSKA B., KWIECIEŃ J. Please cite as: CHEMIK 2012, 66, 5, 515-524 The preliminary results of studies of sodium silicate granulation by pressing method was described. The studies was conducted to test the possibility of obtaining the powdery raw material granules with a specific particle size distribution. In laboratory studies powdered sodium silicates with module of 2 up to 3.3 SiO2 moles/Na2O moles were used. They were investigated in the AWPMA?s matrix press. The studies...

Application of a vibrating system fitted with two synchronized vibrators

Application of a vibrating system fitted with two synchronized vibrators DOMORADZKI M., KANIEWSKA J., POĆWIARDOWSKI W. Please cite as: CHEMIK 2012, 66, 5, 509-514 The method for observing the vibration track of the vibrating table with two counter-synchronized and concurrently vibrators was found. The amplitude of the table was examined. Measured The impact of working parameters of vibrators and vibrating table weight on the amplitude of vibration and movement of seeds on the table was measured. New applications of the studied construction to drive other...

The experimental installation for continuous drum granulation

The experimental installation for continuous drum granulation OBRANIAK A., GLUBA T. Please cite as: CHEMIK 2012, 66, 5, 501-508 The experimental installation for continuous drum granulation with a capacity of 500 kg/h was presented in the paper. Keywords: continuous drum granulation, experimental installations Read more:

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The method for selection of the working system components for a pellet press with flat die

The method for selection of the working system components for a pellet press with flat die CHŁOPEK M., DZIK T., HRYNIEWICZ M. Please cite as: CHEMIK 2012, 66, 5, 493-500 The article describes the flat die pelleting presses, and drew attention to the wide possibilities of application. Then presented their ideas on the way the theoretical determination of the angle of grip material in the granulator operating system and the radius of the roller compaction. Also discussed the experience in the selection of materials...

The method of selection roll press forming elements to consolidate the fine material

The method of selection roll press forming elements to consolidate the fine material BEMBENEK M., GARA P., HRYNIEWICZ M. Please cite as: CHEMIK 2012, 66, 5, 485-492 The shape of the working surface roll press forming elements has a significant impact on product quality and operating cost. Analysis of the literature revealed insufficient knowledge on the subject. This applies especially pressure agglomeration of fine material without the requirement of repetitive shape. So planned and conducted research. Based on their results and own experiences developed...

The constructions of the pelletizer matrix with the working system ?the flat matrix – densification rolls?

The constructions of the pelletizer matrix with the working system ?the flat matrix - densification rolls? HEJFT R., OBIDZIŃSKI S. Please cite as: CHEMIK 2012, 66, 5, 479-484 The paper presents the constructional solutions of the matrix lets the coefficient of the perforation of the matrix incresement and decrease of the material consumption of their producing. The constructions of the matrix allow to decrease of the of the energy consumption of the granulating process. Keywords: pelleting, plant material, matrix, peletizer Read more: Read more

Application of agglomerative granulation to plant seeds (part 2). Pelleting of organic plant seeds

Application of agglomerative granulation to plant seeds (part 2). Pelleting of organic plant seeds DOMARADZKI M., KANIEWSKA J., WEINER W. Please cite as: CHEMIK 2012, 66, 5, 473-478 The application of granulation process for encapsulation of organic seeds was studied. The best composition of material for encapsulation turned out to be a dust mixture containing: 33% kaolin, 50% dolomite and 17% of wood dust. Application of combination of three processes: washing, encapsulation and inoculation with spores of fungus Trichoderma viride gave the best germination results...

Category Archives: Year 2012 Issue 5