scholarly journals Selection of raw materials and control of trace elements for production of high-quality SG iron

China Foundry ◽  
2019 ◽  
Vol 16 (2) ◽  
pp. 79-87 ◽  
Author(s):  
Jia-xin Bai
2018 ◽  
Vol 64 ◽  
Author(s):  
N.V. Bespalova ◽  
M.M. Gomola ◽  
T.I. Yakovleva

The article is devoted to the urgent theoretical and practical problems of the quality control of the chocolate confectionery products in cafes and restaurants. The authors analyze the modern approaches to the quality control of the chocolate confectionery products. The practical recommendations can be useful for the process of selection of the high quality raw materials. The criteria for the quality control of the chocolate confectionery products have been given. Some ways to improve the quality of he chocolate confectionery products have been discussed.


2020 ◽  
pp. 355-361
Author(s):  
Александр Семёнович Макаров

Систематизированы современные литературные данные о совершенствовании сырьевых ресурсов для производства игристых вин. Даны рекомендации о перспективности использования различных сортов винограда в производстве игристых вин: интродуцированных (Мальбек, Сира и др.), селекционных (Рислинг Магарача, Рислинг мускатный, Рислинг красный, Алиготе мускатное, Цитронный Магарача и др.), аборигенных (Кокур белый, Кокур белый 46-10-3, Сых дане, Сары пандас, Кефесия и др.). Выделены факторы, влияющие на основные и дополнительные показатели в системе «виноград-виноматериал-игристое вино», среди которых важными являются степень зрелости винограда, его технологический потенциал, почвенно-климатические условия произрастания винограда. Сделан вывод, что всесторонний подход к подбору сырья с учетом факторов, влияющих на его основные и дополнительные показатели, позволит сформировать сырьевые зоны для производства игристых вин высокого качества. Modern literary sources on the improvement of raw materials for production of sparklings were systematized. Recommendations on the prospects of using various grape varieties in production of sparkling wines are given. They include introduced (‘Malbec’, ‘Syrah’, etc.), selection (‘Riesling Magaracha’, ‘Riesling Muscatny’, ‘Riesling Krasny’, ‘Aligote Muscatnoye’, ‘Tsitronnyi Magaracha’, etc.) and native (‘Kokur Belyi’, ‘Kokur Belyi 46-10-3’, ‘Sykh Dane’, ‘Sary Pandas’, ‘Kefesiya’, etc.) grape varieties. Factors influencing the main and additional indicators in the system "grapes - base wine - sparkling wine" are highlighted. The most important factors are the degree of grape ripeness, its technological potential, soil and climatic conditions of grape growing. It is concluded that a comprehensive approach to the selection of raw materials, taking into account the factors affecting its main and additional indicators, will allow the formation of zones of raw materials for the production of high quality sparkling wines.


2014 ◽  
Vol 1000 ◽  
pp. 73-76
Author(s):  
Ester Helanová ◽  
Radek Janovský ◽  
Rostislav Drochytka

One of the basic conditions of production of high quality products from aerated concrete is selection of appropriate input raw materials. Their material properties have crucial influence on the whole process of production of the products from aerated concrete - from behavior of fresh mix of aerated concrete through setting to development of mineralogical phases during autoclaving. Properties of input materials, in particular their chemical composition has considerable impact on the final properties of the product made from aerated concrete. This paper summarizes current knowledge from the research of microstructure of fly ash aerated concrete depending on chemical composition of the raw materials in the mix.


2011 ◽  
Vol 332-334 ◽  
pp. 630-633
Author(s):  
Ying Sun

In order to obtain the lightweight and high quality flax class knitted fabric, Spins the high-count flax class knitting gauze are solves the question key . This thesis from the Spinning and Selection of raw materials, The teclmology of the high quality blended knitting yarn of flax fiber / bemberg fiber/bamboo charcoal fiber were manufactured by rotor spinning process, is diseussedin ,and through the comparison of different options for the optimization of process parameters the optimization of process parameters.


2014 ◽  
Vol 9 (2) ◽  
pp. 121
Author(s):  
Farida Wahyu Ningtyias ◽  
Ahmad Husain Asdie ◽  
Madarina Julia ◽  
Yayi Suryo Prabandari

Kabupaten Jember masih menghadapi masalah gizi gangguan akibat kekurangan iodium (GAKI), sebagian besar kecamatannya termasuk dalam kategori daerah endemik GAKI. Salah satu penyebabnya adalah faktor goitrogenik sianida yang mengganggu pembentukan hormon tiroid. Keberadaannya pada beberapa sayuran yang biasa dikonsumsi masyarakat menyebabkan diperlukannya pola konsumsi dan proses pengolahan yang baik agar aman dikonsumsi. Penelitian ini bertujuan mengubah pola konsumsi goitrogenik sianida dan cara pengolahannya melalui penyuluhan gizi dan demonstrasi cara pengolahan pangan sumber goitrogenik sianida yang benar. Penelitian ini adalah sebuah penelitian kuasi eksperimental dengan rancangan pretest-posttest control design. Jumlah sampel sebanyak 196 ibu rumah tangga, terdiri dari 98 orang di setiap kelompok perlakuan dan kontrol. Penelitian dilakukan di Kecamatan Arjasa Kabupaten Jember pada bulan Maret hingga Mei 2013. Hasil penelitian menunjukkan adanya peningkatan konsumsi bahan mentah sumber goitrogenik sebesar 25,98 gram. Namun, tidak terjadi peningkatan konsumsi sianida, justru menurun sebesar 9,09 miligram pada kelompok perlakuan. Hal ini terjadi karena pemilihan cara pengolahan yang tepat sesuai materi intervensi, yaitu beralih ke kulub dan rebus berkuah. Namun penurunan ini tidak signifikan (p = 0,56). Materi tentang GAKI dan cara mereduksi kadar sianida pada bahan pangan sumber goitrogenik sianida bisa dijadikan materi penyuluhan dalam program pencegahan GAKI di Kabupaten Jember.Changes in Food Pattern and Food Processing of Source Substance Goitrogenic Cyanide Through Nutrition CounselingJember still encounter the problem of nutrition iodine deficiency disorders (IDD), most of the district are included in the category of endemic areas. One reason is the cyanide goitrogenic factors that can interfere with the function of the thyroid hormone. Its presence in some commonly consumed vegetables society, causes the need for patterns of consumption and good processing in order to make it safe for consumption. Cyanide is a precursor thiocyanate which disrupt the formation of thyroid hormones through two pathways, active transport and interfere with the activity of thyroid peroxidase. This study aimed to change food pattern and way of processing goitrogenic cyanide food stuff through nutritional counseling and demonstration of food processing to reduce cyanide in goitrogenic food stuff. The research was a quasy-experimental study with pretest-posttest control design. The number of samples 196 housewives, consist of 98 people in the respective treatment groups and control. The study was conducted in the District Arjasa Jember between March and May 2013. The result showed presence of increased consumption of raw materials sources goitrogenic cyanide of 25.98 grams, was not followed by an increase in the consumption of cyanide, which has decreased by 9.09 miligram in the treatment group. This occurs because of the selection of appropriate food processing, switching to boil and blanching (kulub). However, this decrease was not significant (p = 0.56). The material on IDD and how to reduce levels of cyanide in the food source of cyanide can be used as material counseling in prevention programs IDD in Jember.


2020 ◽  
Vol 164 ◽  
pp. 14017
Author(s):  
Khungianos Yavruyan ◽  
Evgeniy Gaishun ◽  
Vladimir Kotlyar ◽  
Irina Serebryanaya ◽  
Anastasiya Filippova ◽  
...  

This paper reviews the issue of selecting the compositions of ceramic masses for the production of ceramic blocks made out of technogenic raw materials of a coal series using the methods of mathematical planning. The possibility of replacing classic clay raw materials with non-traditional coal technogenic raw materials (screenings of heaps), which are formed during the processing of heaps with the aim of extracting coal, is considered. The reasons for the growing interest in this technogenic raw material were the reduction of the base of high-quality clay raw materials, the large number of accumulated heaps, as well as the need to reduce the cost of production of ceramic blocks.


Author(s):  
C E H Morris

This lecture, given by the President of the Institute of Metals, reviews some of the changes that have occurred in steelmaking during the past 50 years, and illustrates how steel has become an important part of the developing world of materials. It describes how selection of high-quality raw materials and changes in methods and scale of production have resulted in improved output, reduced energy consumption, and materials suitable for present-day applications such as offshore installations. It discusses the importance of materials for all engineers and related disciplines, and then outlines how the Institution of Mechanical Engineers and the Institute of Metals might together influence education, training and qualifications in complementary areas.


Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.


Alloy Digest ◽  
2013 ◽  
Vol 62 (9) ◽  

Abstract Böhler (or Boehler) W403 VMR is a tool steel with outstanding properties, based not only on a modified chemical composition, but on the selection of highly clean raw materials for melting, remelting under vacuum (VMF), optimized diffusion annealing, and a special heat treatment. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on forming and heat treating. Filing Code: TS-721. Producer or source: Böhler Edelstahl GmbH.


Author(s):  
A.G. Filipova ◽  
A.V. Vysotskaya

The article presents the results of mathematical experiments with the system «Social potential of childhood in the Russian regions». In the structure of system divided into three subsystems – the «Reproduction of children in the region», «Children’s health» and «Education of children», for each defined its target factor (output parameter). The groups of infrastructure factors (education, health, culture and sport, transport), socio-economic, territorial-settlement, demographic and en-vironmental factors are designated as the factors that control the system (input parameters). The aim of the study is to build a model îf «Social potential of childhood in the Russian regions», as well as to conduct experiments to find the optimal ratio of the values of target and control factors. Three waves of experiments were conducted. The first wave is related to the analysis of the dynam-ics of indicators for 6 years. The second – with the selection of optimal values of control factors at fixed ideal values of target factors. The third wave allowed us to calculate the values of the target factors based on the selected optimal values of the control factors of the previous wave.


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