scholarly journals Problems of a Transport Complex of Mining and Processing Plants

2021 ◽  
Vol 334 ◽  
pp. 02034
Author(s):  
Alla Semykina ◽  
Nikolay Zagorodniy ◽  
Yuliya Fomenko ◽  
Alexey Konev
Keyword(s):  
Production Process ◽  
Iron Ore ◽  
Raw Materials ◽  
Rational System ◽  
Material Costs ◽  
Transportation Process ◽  
Processing Plants ◽  
Transport Complex

The article considers problems of a transport complex of mining and processing plants. Requirements for quarry transport are presented. The production process and technological operations of the transportation process are considered. The ways of solving the problems of the transportation process are determined. It is established that when creating a rational system for transporting iron ore raw materials, it is possible to reduce material costs and losses during transportation.

scholarly journals Development of scientific and methodological approaches to improve the efficiency of quarry transport operation

2020 ◽  
Vol 17 (6) ◽  
pp. 690-703
Author(s):  
A. N. Novikov ◽  
I. A. Novikov ◽  
N. A. Zagorodnij ◽  
A. S. Semykina
Keyword(s):  
Simulation Model ◽  
Information Technologies ◽  
Iron Ore ◽  
Raw Materials ◽  
Open Pit ◽  
Identification System ◽  
Temporary Storage ◽  
Transportation Process ◽  
Dump Trucks ◽  
Methodological Approaches

Introduction. The article discusses innovative and information technologies, an identification system, the purpose of which is to increase the efficiency of the operation of open pit transport. An algorithm for the operation of vehicles in a quarry in a simulation model has been developed. The method of calculating the rational amount of quarry transport for the transportation of iron ore from the place of extraction in the quarry to a temporary storage point is presented.Methods and materials. To manage the transportation process at GOK, it is required to use improved methods and methods for optimizing transport flows to reduce costs in the system “quarry-warehouse / processing plantproduction”, taking into account the dynamics of processes. To increase the efficiency of the operation of open-pit vehicles, the use of innovative and information technologies, an identification system is required. As a scientific and methodological approach, preliminary registration of open pit transport and fixing the time of loading and unloading processes, cargo movement are used. To organize the operation of the transportation process, it is necessary to develop an algorithm for the operation of open pit transport in a simulation model, which will allow collecting information about the state of all temporary storage points, the duration of the transportation process, etc. The implementation of the results of using the methodology for calculating a rational number of vehicles allows to achieve an effective raw materials from the quarry to a temporary storage point.Results. The authors have developed scientific and methodological approaches to improve the efficiency of mining transport operation.Conclusion. Research of the organization of work of the process of transportation of iron ore raw materials at the mining and processing plant has been carried out. It is concluded that it is necessary to develop scientific and methodological approaches to improve the operation of open pit transport. An algorithm for the operation of open pit transport in a simulation model has been developed, which allows taking into account the influence of the control and distribution system of dump trucks on the number of excavators and the timely delivery of dump trucks to storage points. The method of calculating the rational amount of quarry transport for the transportation of iron ore raw materials is presented.

scholarly journals Geophysical methods for controlling the useful component content as the basis for the quality management system at mining and processing enterprises

2020 ◽  
Vol 29 (1) ◽  
pp. 3-15
Author(s):  
Albert А. Аzarian ◽  
Wolodymyr А. Аzarian
Keyword(s):  
Quality Control ◽  
Quality Management ◽  
Management System ◽  
Iron Ore ◽  
Quality Management System ◽  
Raw Materials ◽  
Geophysical Methods ◽  
Operational Quality ◽  
Processing Plants ◽  
Component Content

The article is devoted to substantiating the possibility of creating a common quality management system for iron ore plants based on geophysical methods of operational quality control for mineral raw materials. Due to the fall in prices on the world markets of iron ore raw materials, the financial and economic situation of the mining and processing enterprises in Ukraine has significantly worsened. Thus, the problem of effective control and quality management in mining has become of maximum importance. The availability of timely and reliable information about the content of the useful component will allow responding quickly, forming an integrated final ore cargo flow of the plant of exact quality required by the mining and concentration complex. The need to create a common quality management system is dictated by the fact that the iron ore has a heterogeneous distribution of the useful component content within the deposit, the extraction and transport equipment operates irregularly, resulting in ore cargo flows of various degrees of integration have significant amplitude and frequency oscillations, both by quality and quantity indicators. The instability of the useful component content in the ore cargo, which is aimed at enrichment, leads to a decrease in concentrate output, increase of losses in the tails, costs increase, decrease of the enterprise profit and decrease of its competitiveness. The mathematical model of ore cargo flow formation, which has a range of limitations on quality characteristics, is given. The structure and functional scheme of the quality management system of the mining and processing plant are substantiated. As a result of theoretical studies, the possibility of using radiometric and magnetometric methods for the operational quality control of the iron ore raw materials in the conditions of mining and processing plants by geophysical devices developed by the staff of the problem-branch laboratory of the Kryvyi Rih National University and Rudpromheofizyka LLC is substantiated. The basic technological characteristics of devices and systems are given, information on their introduction into production is provided. It is concluded that the researches carried out and the devices introduced on their basis have created objective prerequisites for substantiating the quality management system at mining and processing plants. The devices and operational control systems based on geophysical methods allow to cover all major stages of mining and processing, to receive timely and reliable information on the condition and dynamics of changes in the useful component content, to efficiently quality management at mining and processing plants, to increase the enterprises competitiveness and profitability.

SELISIH BIAYA PRODUKSI SEBAGAI ALAT PENGENDALIAN MANAJEMEN PT INDO PUSAKA BERAU

2019 ◽  
Vol 3 (02) ◽  
pp. 397
Author(s):  
SAFITRI NURHIDAYATI ◽  
RIZKI AMELYA SYAM
Keyword(s):  
Raw Materials ◽  
Field Research ◽  
Analytical Tool ◽  
Production Costs ◽  
Raw Material ◽  
Labor Costs ◽  
Material Costs ◽  
Library Research ◽  
The Difference ◽  
The Cost

This study aims to analyze whether the difference that occurs in the cost of raw materials, direct labor, and factory overhead costs between the standard costs and the actual costs in PLTU LATI is a difference that is favorable or unfavorable. Data collection techniques with field research and library research. The analytical tool used is the analysis of the difference in raw material costs, the difference in direct labor costs and the difference in factory overhead costs. The hypothesis in this study is that the difference allegedly occurs in the cost of raw materials, direct labor costs, and factory overhead costs at PT Indo Pusaka Berau Tanjung Redeb is a favorable difference. The results showed that the difference in the cost of producing MWh electricity at PT Indo Pusaka Berau Tanjung Redeb in 2018, namely the difference in the price of raw material costs Rp. 548,029.80, - is favorable, the difference in quantity of raw materials is Rp. 957,216,602, - is (favorable) , the difference in direct labor costs Rp 2,602,642,084, - is (unfavorable), and the difference in factory overhead costs Rp 8,807,051,422, - is (favorable) This shows that the difference in the overall production cost budget is favorable or profitable. This beneficial difference shows that the company is really able to reduce production costs optimally in 2018.  

Peran Teknologi Dalam Mengembangkan Potensi Ekspor Topeng Malangan (Analisis Situasional Dan Rencana Solusi)

2018 ◽  
Vol 2 (1) ◽  
pp. 35
Author(s):  
Nurida Finahari
Keyword(s):  
Production Process ◽  
Wood Species ◽  
Management System ◽  
Raw Materials ◽  
Business Management ◽  
Production Equipment ◽  
Cultural Events ◽  
The Arts ◽  
Puppet Show ◽  
Three Stages

The art of chisel mask is developed in Tumpang Malang area as part of dance costume fairs, puppet show andcultural ritual, although in its development, this mask sculpture is also sold and become a tourism commodity. The potentialsales of mask sculptures is increasing, especially because of the demanders are foreign tourists, cultural enthusiasts andcomponent of tourism activities. That is, Topeng Malangan has the potential to be developed as an export commodity. Thesales system is still limited to cultural events or when there is a visit of education and tourism to the arts-padepokan. Thisprompted some people around the padepokan to start a home industry to meet the availability of the mask. In general, theproblems encountered by the craftsmen are (1) availability of raw materials, especially for suitable wood species, (2)production equipment, especially for pre-carving process and preservation of product, (3) there is no standard marketingscheme, (4) does not have a business management system, and (5) highly skilled craftsmen are still very limited. The solutionsoffered are divided into three stages: (1) technological strengthening, including strengthening production process technologyand increasing the number of craftsmen; (2) establishing business management; and (3) establishing trademarks, copyrightsand product marketing expansions

Identification of antibiotics in meat. Flow cytometry capabilities

Vsyo o myase ◽  
2020 ◽  
pp. 56-60
Author(s):  
Zayko E.V. ◽  
◽  
Kuznetsova O.A. ◽  
Bataeva D.S. ◽  
Grudistova M.A. ◽  
...  
Keyword(s):  
Raw Materials ◽  
Animal Husbandry ◽  
Flow Cytometer ◽  
Poultry Meat ◽  
Meat Processing ◽  
Beta Lactams ◽  
Antimicrobial Substances ◽  
Chemotherapy Drugs ◽  
Processing Plants ◽  
Meat Samples

The problem of the uncontrolled use of antibiotics currently remains unresolved. Step-by-step monitoring of meat using modern methods will reduce the risk of using contaminated meat raw materials for food production. Qualitative monitoring will identify samples containing residual antimicrobial substances. The use of methods for identifying groups of antibiotics will help narrow the search for antibiotics by expensive chromatographic methods. A study was carried out of beef, pork and poultry meat, which is used in meat processing plants in the production of raw smoked sausages, using two methods. At the first stage, using a qualitative microbiological method, the raw meat was evaluated for the presence of antimicrobial substances, then their group was determined using a NovoCyte flow cytometer. According to the results of a study on a flow cytometer, it was found that out of 10 groups of antibiotics that can be determined by the tested method, the group of lincosamides was not found in all meat samples. The most common groups of chemotherapy drugs in pork were sulfonamides – 29.6 %, tetracycline group – 18.5 % and beta-lactams – 14.8 %, and in beef aminoglycosides – 36.7 %, phenicols – 30 % and beta-lactams – 13.3 %. In poultry meat samples, the most common were sulfonamides – 23.2 %, fenicols – 23.2 %, and beta-lactams – 16 %. Five groups of antibiotics were found in all studied types of meat: fenicols, β-lactams, macrolides, polypeptide antibiotics, and quinolones. This indicates their widespread use in animal husbandry and poultry farming.

Material costs in productural productivity structure: world trends and impact on development of the domestic economy

2019 ◽  
Vol 39 (2) ◽  
pp. 196-205
Author(s):  
N. V. Firov
Keyword(s):  
Economic Development ◽  
Comparative Analysis ◽  
Natural Resources ◽  
National Economy ◽  
Raw Materials ◽  
The State ◽  
Domestic Economy ◽  
Western Countries ◽  
Material Costs

A comparative analysis of the prices of raw materials, fuel, electricity in Russia and Western countries, the dynamics of their growth and impact on the national economy. It is shown that in the interests of the country's economic development and improving the welfare of the population, it is necessary to use its natural resources more effectively, to pursue a more stringent and at the same time balanced policy to curb the growth of prices, taking into account the interests of the state and business.

scholarly journals Comparative Study of the Properties of Wood Flour and Wood Pellets Manufactured from Secondary Processing Mill Residues

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2487
Author(s):  
Geeta Pokhrel ◽  
Yousoo Han ◽  
Douglas J. Gardner
Keyword(s):  
Moisture Content ◽  
Bulk Density ◽  
Raw Materials ◽  
Wood Flour ◽  
The United States ◽  
Red Maple ◽  
Wood Pellets ◽  
Secondary Processing ◽  
Material Costs ◽  
Mill Residues

The generation of secondary processing mill residues from wood processing facilities is extensive in the United States. Wood flour can be manufactured utilizing these residues and an important application of wood flour is as a filler in the wood–plastic composites (WPCs). Scientific research on wood flour production from mill residues is limited. One of the greatest costs involved in the supply chain of WPCs manufacturing is the transportation cost. Wood flour, constrained by low bulk densities, is commonly transported by truck trailers without attaining allowable weight limits. Because of this, shipping costs often exceed the material costs, consequently increasing raw material costs for WPC manufacturers and the price of finished products. A bulk density study of wood flour (190–220 kg/m3) and wood pellets (700–750 kg/m3) shows that a tractor-trailer can carry more than three times the weight of pellets compared to flour. Thus, this study focuses on exploring the utilization of mill residues from four wood species in Maine to produce raw materials for manufacturing WPCs. Two types of raw materials for the manufacture of WPCs, i.e., wood flour and wood pellets, were produced and a study of their properties was performed. At the species level, red maple 40-mesh wood flour had the highest bulk density and lowest moisture content. Spruce-fir wood flour particles were the finest (dgw of 0.18 mm). For all species, the 18–40 wood flour mesh size possessed the highest aspect ratio. Similarly, on average, wood pellets manufactured from 40-mesh particles had a lower moisture content, higher bulk density, and better durability than the pellets from unsieved wood flour. Red maple pellets had the lowest moisture content (0.12%) and the highest bulk density (738 kg/m3). The results concluded that the processing of residues into wood flour and then into pellets reduced the moisture content by 76.8% and increased the bulk density by 747%. These material property parameters are an important attempt to provide information that can facilitate the more cost-efficient transport of wood residue feedstocks over longer distances.

Steam Ejector Used as a Substitute for Cooling Tower in the Ethanol Production Process

2009 ◽  
Author(s):  
Luiz Antonio Negro Martin Lopez ◽  
Daniel Kao Sun Ting ◽  
Alfredo Jose´ Alvim de Castro
Keyword(s):  
Global Warming ◽  
Production Process ◽  
Ethanol Production ◽  
Sugar Cane ◽  
Raw Materials ◽  
Cooling Water ◽  
Production Plant ◽  
Cooling Towers ◽  
Steam Ejector ◽  
Sugar Cane Juice

Nowadays petroleum dependency in transportation is widely discussed all over the world. Atmospheric pollution and global warming are deleterious consequences of gasoline consumption. Ethanol is a natural substitute fuel that has been increasingly used. One of the most important raw materials used for ethanol production is the sugar cane. The exothermic fermentation reaction of the sugar cane juice in the ethanol production process requires a rigorous temperature control. This control is usually made by using cooling water from cooling towers. The heat released from cooling towers not only has an economical cost as well as it contributes to the global heating. Steam ejectors can substitute cooling towers thus improving the ethanol production plant efficiency and reducing world heating. Furthermore, steam ejectors are smaller, cheaper and are very simple equipment when compared with cooling towers. Furthermore, its use provides an improved thermal efficiency of the production plant resulting in the reduction of the global warming effects. In this work the use of steam ejector is proposed for the fermentation cooling of a typical Brazilian sugar and ethanol production plant. The steam which feeds the steam ejector is obtained from the plant utilities and the low temperature obtained from steam expansion within the ejector is used for sugar cane fermentation process cooling. The steam ejector discharge heat is recovered as it is used to sugar and ethanol production process heating. The sugar and ethanol production plant overall energy fluxes either using cooling towers as well as using steam ejectors are presented and the results are compared and discussed.

Adjustment of a technology of cast iron smelting in the blast furnace of jsc "ural steel" w ith a volume of 1232 см3 with charge h a v in g 95% share of Mikhailovskii GOK pellets

2021 ◽  
Vol 77 (7) ◽  
pp. 768-775
Author(s):  
I. F. Iskakov ◽  
G. A. Kunitsyn ◽  
D. V. Lazarev ◽  
А. А. Red`kin ◽  
S. A. Trubitsyn ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Iron Ore ◽  
Raw Materials ◽  
Raw Material ◽  
Material Base ◽  
Hot Metal ◽  
Charging System ◽  
Iron Smelting ◽  
Gas Consumption ◽  
A Charge

To use effectively internal raw material base, JSC “Ural Steel” accomplished I category major overhaul of the blast furnace No. 2. The main purpose of the overhaul was to design a rational profile which could ensure an ability to operate with a charge containing 95 % of Mikhailovskii GOK (mining and concentrating plant) pellets having basicity of 0.5 by CaO/SiO2. The blast furnace No. 2 having useful volume of 1232 m3, was constructed by design of Danieli Corus, the Netherlands, and was blown in on December 30, 2020. In the process of guarantee tests, step-by-step increase of Mikhailovskii GOK pellets (Fetotal = 60.5 %, CaO/SiO2 = 0.5) content in the charge iron ore part was being accomplished from 55 to 95.1%. Charging of the blend containing pellets in the amount of 55% of iron ore part, was done by charging system 4OOCC + 1COOCC (Ore - Coke) with filling level 1.5 m. Under conditions of pellets part increase in the blend, the charging system was changed to decrease their content at the periphery, to increase it in the ore ridge zone and make it intermediate between periphery and the ore ridge. At the pellets share in the iron ore raw materials 0.75 the charging system was used as the following: 3OOCC + 1COOC + 1COOCC, while at the content 95.1% the following charging system was used: 2COOC + 2COOC + 1COOCC. It was noted that in the period of guarantee tests the furnace running was smooth. The average silicon content in the hot metal was 0.70% at the standard deviation 0.666. Sulfur content in the hot metal did not exceed 0.024%, the blowing and natural gas consumption figures were 2100 m3/min and 11000 m3/min correspondently, oxygen content in the blowing 26.5%, hot blowing and top smoke pressure figures were 226.5 and 109.8 KPa correspondently. The productivity of the furnace was reached as high as 2358 t/day at the specific coke rate 433 kg/t of hot metal. After guarantee tests completion, the pellets content in the iron ore part was decreased gradually from 95 down to 50%. The decreasing was made by 5% in every 6 hours of operation. Application of the mastered technology of the blast furnace No. 2 with the increased share of pellets will enable to stably supply the blast furnaces No. 1, 3 and 4 by iron ore raw materials in the proportion of 30-35% of pellets and 65-70% of sinter.

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