Sludge of the Fuel-Energy and Oil-Producing Complex in the Production of Wall Ceramic Products

Abstract

The experience of using slime wastes in the production of wall ceramic bricks is considered. The results of the investigation of clayey raw materials in the deposits of the Western Orenburg region and technogenic wastes of the fuel-energy and oil-producing complex are analyzed with an analysis of their effect on the properties of wall ceramics: density, strength, and water absorption. Based on the results of the research, optimal compositions were developed using ash and slag wastes in a composition with aluminosilicate clay raw material - loam. The influence of drill cuttings with an increased content of calcium oxide on the composition and physical and mechanical properties of wall ceramics, the effect of a composition of low-grade local clay raw materials and drill cuttings on the formation of the structure and properties of ceramic materials is shown. The analysis of the volumes of formation of ash-and-slag wastes and drill cuttings is given, which makes it possible to introduce technogenic wastes into secondary production and to expand the mineral and raw materials base for the production of ceramic bricks.

The Press Powder Technological Parameters Optimization in Wall Ceramics Production by the Semi-Dry Pressing Method

“…1) after separate grinding showed that it was possible to obtain the ceramic brick brands from M120 to M225 with satisfying physical and mechanical properties, where the average density is in the range from 1,6 to 1,98 g / cm 3 and with water absorption 12-14 %. The selected areas determine the optimal pressure in the range from 19,5 to 20,5 MPa, which is confirmed by the previous studies [6]. By changing the amount of molding moisture in the press powder of the recommended composition from 8 to 12 % and the spent pressing pressure of 20 MPa (Fig.…”

“…At the initial stage of the research, the granulometric composition of the initial clay raw material and ASW as a corrective additive was determined (Table 3). The required amount of ash and slag waste in the charge should be 28 % by weight was established based on the exploratory experiments [6]. Since loams contain a large number of quartz inclusions with a melting point of 1450 ° C, an additional silicate-lump of melt is introduced in the amount of 10 % by mass, to form a sufficient number of melted eutectics and to destroy the quartz crystal lattice.…”

“…Due to the poor quality of the brick produced by the plant and the pre-burning properties obtained results, chemical and mineralogical compositions [5] (Table 1, 2), it was decided to switch to the semi-dry pressing method with the introduction of ash and slag waste to increase the brick grade and reduce the cracks on the surface ceramic shard. The standard methods for studying the structure and composition of raw materials, technological parameters of ceramic products according to GOST 9169-75, GOST 530-2012 were used during the study.…”

Ceramic Bricks of Semi-Dry Pressing with the Use of Fusible Loams and Non-Traditional Mineral Raw Materials

“…At the next stage, the technological properties of the clayey raw materials were determined (Table 2). On the basis of the data obtained on the number of plasticity of loam and literary analysis [8][9][10][11], one can judge the feasibility of its use in the production of bricks by the method of semi-dry pressing.…”

The Effect of Manganese-Containing Pigment on the Strength of Ceramic Bricks

“…At the same time, the volume coloring of the product, especially in the case of obtaining saturated color tones, requires an increased consumption of coloring additives, which increases its cost. Reducing the cost of the product in this case is possible due to the use in the compositions of the masses of man-made wastes containing in enough quantity color-forming oxides necessary to give the material the desired color [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The choice of pigments is determined by the properties of the pigment and material, the nature of their interaction, as well as the processing parameters and operating conditions of the products.…”