Сomputational Experience Optimization of Colors in Complex Fractal Images in Carpet Design Using the Simplex Method

This article proposes a new approach based on linear programming optimization to solve the problem of determining the color of a complex fractal carpet pattern. The principle is aimed at finding suitable dyes for mixing and their exact concentrations, which, when applied correctly, gives the desired color. The objective function and all constraints of the model are expressed linearly according to the solution variables. Carpet design has become an emerging technological field known for its creativity, science and technology. Many carpet design concepts have been analyzed in terms of color, contrast, brightness, as well as other mathematical concepts such as geometric changes and formulas. These concepts represent a common process in the carpet industry. This article discusses the use of complex fractal images in carpet design and simplex optimization in color selection

Tecnologías de extracción de productos petrolíferos respetuosas con el medio ambiente para purificar residuos con hidrocarburos

Pérdidas sustanciales de petróleo en residuos con hidrocarburos y su efecto negativo en el medioambiente regional hace necesario desarrollar una tecnología de purificar residuos con hidrocarburos. La tarea aquí determinada es deseñar un dispositivo solar y desarrollar un método de tratar residuos con hidrocarburos en este dispositivo con la obtención de productos petrolíferos. La gran variabilidad en las propiedades y composición de la materia prima de lodo oleoso y su tendencia a formar emulsiones estables o a la separación en fases hizo necesario llevar a cabo un estudio físico y químico detallado y predeterminó la demanda de desarrollar un modo industrial de purificar residuos con hidrocarburos. El dispositivo diseñado usa la energía solar para el tratamiento térmico de los hidrocarburos de productos petrolíferos sin ningún daño a su estructura química. Al purificar residuos con hidrocarburos con la ayuda de energía solar, el contenido de residuos sólidos en el subsuelo no sobrepasa 6.65-6.79 % y el peso absoluto molecular de hidrocarburos se hace próxima al peso absoluto molecular de betún. El método de tratamiento desarrollado resuelve el problema medioambiental importante de eliminar residuos con hidrocarburos, estimula la restoración de conjuntos naturales, previene su degradación y reduce la contaminación de la capa de suelo y cuencas de agu

The process of beneficiation of fine chrome sludges on concentration tables

Processing industrial products and technogenic waste is an urgent task in mining and metallurgical industry. In Kazakhstan, processing of chrome ores of the Kempirsay group of deposits creates more than 15 million tons of sludge tailings with a chromium oxide content of up to 30 wt. %. The best results of processing fine chrome raw materials are demonstrated by Turkish enterprises that use sludge separation by size classes and enrichment on concentration tables. The authors performed a research on Dubersay tailing dump chromium sludge enrichment (Kazakhstan) using similar technological approaches, which allowed to obtain concentrates containing 51 wt.% Chromium oxide and increase the yield of rich fine chromium concentrates by 14 % compared to the existing enrichment scheme

Beneficiation of chrome slurry tailings at Donskoy mining and beneficiation plant (DMBP) JSC to produce hard pellets

The article is about the problem of beneficiation of finely dispersed chromium slurry tailings of “Donskoy Mining and Beneficiation Plant” JSC by chemical and gravitation methods. Chemical destruction of chromium spinelids by sulphation with a mixture of ammonium sulphate and sulphuric acid enables to transfer a part of magnesium oxide to a water-soluble state and further gravitation beneficiation on concentration tables to obtain a fine-grained rich chromium concentrate. Silica, calcium, and iron oxide additives are used to produce pellets from the fine chrome concentrate, serving as binding agents and enabling the production of hard chrome pellets during roasting. In the future, roasted pellets will be used in the smelting of high-carbon ferrochrome in electric furnaces

Tecnologías de extracción de productos petrolíferos respetuosas con el medio ambiente para purificar residuos con hidrocarburos

Significant oil losses in oil-containing wastes and their adverse impact on the region’s environmental setting bring about the need to develop an oil-containing wastes treatment technology. To tackle this issue, the authors have set an aim of designing a helio device and creating an oil-containing wastes treatment method based on it to extract oil products. Considering a wide spread in the composition and properties of potential oil sludge raw materials and their tendency for either formation of stable emulsions or phase separation, we have conducted in-depth modern physical and chemical studies and defined the need to develop a commercial oil-containing wastes purification method. We have designed the device, in which oil product hydrocarbons undergo thermal treatment using solar energy without prejudice to their chemical structure. Following oil-containing wastes purification using solar energy, the particulate load in soil does not exceed 6.65-6.79% and the absolute molecular weight of hydrocarbons approaches that of bitumen. The oil-containing wastes purification method developed solves an important environmental issue of oil-containing wastes recycling, promotes recovery and prevents degradation of natural complexes, and reduces soil and water pollution.Pérdidas sustanciales de petroleo en residuos con hidrocarburos y su efecto negativo en el medioambiente regional hace necesario desarrollar una tecnología de purificar residuos con hidrocarburos. La tarea aquí determinada es deseñar un dispositivo solar y desarrollar un método de tratar residuos con hidrocarburos en este dispositivo con la obtención de productos petroliferos. La gran variabilidad en las propiedades y composición de la materia prima de lodo oleoso y su tendencia a formar emulsiones estables o a la separación en fases hizo necesario llevar a cabo un estudio físico y químico detallado y predeterminó la demanda de desarrollar un modo industrial de purificar residuos con hidrocarburos. El dispositivo diseñado usa la energía solar para el tratamiento térmico de los hidrocarburos de productos petroliferos sin ningun daño a su estructura química. Al purificar residuos con hidrocarburos con la ayuda de energía solar, el contenido de residuos sólidos en el subsuelo no sobrepasa 6.65-6.79 % y el peso absoluto molecular de hidrocarburos se hace próxima al peso absoluto molecular de betún. El método de tratamiento desarrollado resuelve el problema medioambiental importante de eliminar residuos con hidrocarburos, estimula la restoración de conjuntos naturales, previene su degradación y reduce la contaminación de la capa de suelo y cuencas de agua

Obtaining of strong chromium pellets with the use of a ferrosilicon-calcium binder

The article presents the results of research on the synthesis of strong chrome pellets based on concentrates obtained by enrichment of chrome sludge. To obtain strong fired pellets from the concentrates, it is proposed to use a ferrosilico- calcium reagent as a binder, which makes it possible to increase the strength of the pellets by 2-3 times in comparison with the technology operating at “Donskoy Ore Mining and Processing Plant”. This excludes the supply of fluxing reagents during electric arc smelting of raw materials to high-carbon ferrochrome. Pellets from concentrates obtained during the processing of tailings from the Dubersay sludge storage have increased strength up to 5 330 N/pellet at a roasting temperature of 1 200 °C

Chemical sulfatization of chrome-containing sludges from DUBERSAY tailing dump

Waste chromium production sludge from the Dubersay tailings dump is present in huge quantities with a magnesium oxide content of up to 40 %. The chrome-containing waste was sintered at 1 100 °C, the resulting sinter was mixed with sulphuric acid when heated to 300 °C. The resulting mixture after heating was leached with water at 90 °C, the solid precipitate was washed and dried to yield a chrome concentrate containing 55,4 % Cr2O3, 8,2 % SiO2. Evaporation of the purified solution produces magnesium sulphate which is a magnesium fertilizer

Chemical sulfatization of chrome-containing sludges from DUBERSAY tailing dump

Waste chromium production sludge from the Dubersay tailings dump is present in huge quantities with a magnesium oxide content of up to 40 %. The chrome-containing waste was sintered at 1 100 °C, the resulting sinter was mixed with sulphuric acid when heated to 300 °C. The resulting mixture after heating was leached with water at 90 °C, the solid precipitate was washed and dried to yield a chrome concentrate containing 55,4 % Cr2O3, 8,2 % SiO2. Evaporation of the purified solution produces magnesium sulphate which is a magnesium fertilizer

A study of the physico-chemical composition and technological properties of sheep and goat milk (ShGM) depending on the breed of the animal

The aim of the study is to identify and substantiate the breed of sheep and goats for collecting milk for the purpose of producing yogurt. The milk of 14 breeds of sheep and 10 breeds of goats was considered for the production of yogurt. A statistical analysis is given and the choice of breed of goats and sheep for the selection of milk for the production of live yogurt is substantiated. Live yogurt is a product with live microorganisms for 14 days, in this case, the viability of bacteria is 28 days when stored in refrigerated conditions, in plastic cups sealed with a foil lid, using special equipment. Probiotics stimulate the production of immunomodulatory substances by beneficial intestinal microflora, as well as normalize cholesterol and glucose levels in the blood, bind and remove some toxic substances from the body. Research in this direction will open up many hidden potentials of fermented milk products based on sheep and goat milk and live microorganisms. There are prerequisites for the creation of new original recipes for functional dairy products and these studies are of the greatest scientific interest. The laboratories of the Kazakh Research Institute of Processing and Food Industry also used their own living microorganisms – probiotics for the preparation of consortiums based on lactic acid and bifidobacteria. Milk was collected from 10 ewes and goats from each breed from June to August 2021. Milk sampling was carried out in the morning milking. Milk indicators were studied using standard methods in the laboratory "Biotechnology, quality and safety of food products" of the "Kazakh Research Institute of Processing and Food Industry" LLP

Obtaining of strong chromium pellets with the use of a ferrosilicon-calcium binder

The article presents the results of research on the synthesis of strong chrome pellets based on concentrates obtained by enrichment of chrome sludge. To obtain strong fired pellets from the concentrates, it is proposed to use a ferrosilico- calcium reagent as a binder, which makes it possible to increase the strength of the pellets by 2-3 times in comparison with the technology operating at “Donskoy Ore Mining and Processing Plant”. This excludes the supply of fluxing reagents during electric arc smelting of raw materials to high-carbon ferrochrome. Pellets from concentrates obtained during the processing of tailings from the Dubersay sludge storage have increased strength up to 5 330 N/pellet at a roasting temperature of 1 200 °C