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41.
Crystallisation and luminescence properties of glasses in (SmхY1-х)2O3 - Al2O3 - B2O3
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(Science for glass production)
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In system Y 2 O 3 - Al 2 O 3 - B 2 O 3 glasses and products of solid-phase synthesis in the form of single-phase powders with a huntite structure, activated with samarium, were obtained. It ...
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42.
Conditions of melting quartz glass with high purity and structural quality
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(Science for glass production)
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Based on the analysis of the conditions for the formation of quartz of various deposits, their structural, physicochemical properties, known technologies for the production of quartz grains, new operations ...
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43.
Easy removable ceramic cores for investment casting GTE blades
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(At the enterprises and institutes)
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Methods have been developed for softening and removing ceramic rods from a metal casting due to polymorphic transitions in cristobalite and ?-Ca 2 SiO 4 during vibration in water with surfactants without ...
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44.
Nature of Liquescence and Fluidity of Kaolin of the Zhuravliny Log Deposit (a Review)
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(Raw materials)
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A review of studies on the nature of the most effective methods for regulating the liquefaction and fluidity of kaolin from the Zhuravliny Log deposit is presented. The data on the material, mineral and ...
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45.
Structural and phase changes in natural quartz crystal upon fluoride treatment
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(Science for glass production)
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New information has been obtained on the structural changes occurring during the fluorination of natural crystalline quartz with ammonium hydrodifluoride. The morphological, structural and phase features ...
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46.
Equilibrium forms of chromium oxide in colored optical silicate glasses
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(Science for glass production)
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The formation of the equilibrium Cr (III) & hArr; Cr (VI) in colored optical glasses under the combined action of the acid-base properties of the matrix, the total concentration of chromium and the amount ...
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47.
Magnetic concentration of quartz glass. Analysis of the separator operation
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(Equipment)
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A comparative analysis of magnetic separators used to reduce and stabilize the iron content in quartz sand has been carried out. It is shown that obsolete electromagnetic roller and rotary separators are ...
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48.
Current problems of high-transparent glass production
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(Science for glass production)
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The conditions for obtaining highly transparent glasses are considered. Data on the effect of coloring impurities and additives on the optical and spectral properties of glasses are presented. The role ...
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49.
Synthesis of Na2O - B2O3 - SiO2 glass for coatings protecting bronze upon smelting
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(Coatings)
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A set of requirements for non-fired technological glass coatings to protect bronze during melting has been formulated, and their properties have been determined. With the help of DTA, the most critical ...
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50.
Technological concentration of mineral admixtures in the fine fraction of quartz powder upon grinding
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(Raw materials)
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With the use of a natural impurity - albite - a qualitative picture of the enrichment of the fine fraction of quartz sand in the grinding process has been experimentally established. It is shown that in ...
