Management and engineering solutions to improve processing stock quality and reduce resource-intensity of mining

2018 ◽  
pp. 56-68
Author(s):  
V. V. Agafonov ◽  
V. Yu. Zalyadinov ◽  
M. E. Yusupov ◽  
N. S. Bikteeva
Keyword(s):  
Development Strategy ◽  
Open Pit ◽  
Mining Operations ◽  
High Concern ◽  
General Production ◽  
Resource Intensity ◽  
Product Output ◽  
And Control ◽  
A Company

Sustainability of mining companies is of of high concern. The problem is specifically acute at companies that are monotownor monosettlement-forming. Sustainability of a mine depends in many ways on product quality and production resource-intensity. This article discusses formation of mineral quality indexes in terms of an open pit chrysotile mine. The studies took into account specific features of operation procedures implemented by each structural division of the mine. The analysis has found managerial and technological inconsistencies which affect quality and marketable product output, as well as efficiency of the mine in whole. The background for efficiency enhancement at a company is, by the authors’ opinion, consolidation of personnel subject to the single development strategy, namely: improvement of production and control efficiency, as well as use of available reserves and resources by means of better setup for production. The proposed approaches to planning mining operations and forming mineral quality allow higher quality of processing stock. In addition, a new model proposed for interaction between structural divisions of a mining company ensures improvement of general production indexes.

scholarly journals DEVELOPMENT OF A MINING SIMULATION MODEL FOR POTASSIUM ORE MINING PLANNING

2020 ◽  
Vol 20 (4) ◽  
pp. 47-54
Author(s):  
A.V. Zatonskiy ◽  
◽  
P.A. Yazev ◽  
Keyword(s):  
Simulation Model ◽  
Underground Mining ◽  
Limiting Factor ◽  
Mining Operations ◽  
Active Systems ◽  
Mining Enterprise ◽  
General Production ◽  
Multi Agent ◽  
Simulation Results

In this article, we show the importance of potash fertilizers produced by PJSC Uralkali, Berezniki, Perm Territory for agriculture and the economy in general. А process of potas¬sium ore underground mining is described from breaking up moment till transportation to the surface. An importance of production planning for the mining enterprise functioning is substantiated. Various levels of plan-ning, from a general production plan to a weekly and daily plans are described. The problem of such planning at PJSC Uralkali is in using only integral performance indicators, it leads to significant errors. It is proposed to use simulation modeling as a possible solution to the problem. Purpose of work. The purpose of this work is to develop a simulation model of mining operations, from the process of breaking and transporting ore to a conveyor-transport system, and to test model’s applicability for ore mining planning. Since the existing software has a number of limitations in applies to potash mines, a specialized object-oriented library allows modeling queuing systems, multi-agent and active systems is used as a basis for modeling. The limitations and as-sumptions of the model are described. Materials and methods. The model is igned as a determinis-tic automaton. The end point for ore mining process modeling is the transfer of ore to the unloading point, because further transportation of ore is not a limiting factor for mining. Conclusion. The spe-cial states of all objects of the system including mining combine – self-propelled car – unloading point and all possible transitions between them are described. A data from open sources is taken to check the adequacy of the model. Changes in the simulation results are investigated for various in-put parameters in the developed software. The simulation results are of a pulsating character due to the periodic execution of the harvester drive away. A productivity of the combine decreases with an increase in the distance traveled by a self-propelled car. The possibility of transition to a stochas-tic model is investigated. An expected decrease due to an increase in the downtime of the combine is shown. A conclusion about the applicability of the model to improve the quality of planning for un-derground potassium ore mining is made based on obtained data.

Building an integrated index to assess the likelihood of overstated financial results in financial statements

2021 ◽  
Vol 22 ◽  
pp. 227-248
Author(s):  
Sergei A. DUDIN ◽  
Marina Yu. SAVEL'EVA ◽  
l'ya N. MAKSIMENKO
Keyword(s):  
Resource Development ◽  
Financial Statements ◽  
Economic Sectors ◽  
Mining Operations ◽  
Construction Companies ◽  
Integrated Index ◽  
Accounting Reports ◽  
Methodological Aspects ◽  
A Company

Subject. Reliability and quality of financial statements guarantee the confidence of State structures, creditors, potential investors and other stakeholders of a company. Objectives. Our purpose is to discuss theoretical and methodological aspects of reliability of financial statements, build an indicator to reveal misstatements of financial results disclosed in accounting reports, define industry specifics in determining the indicators that characterize distortions in financial performance of companies. Methods. We offer a technique to estimate the probability of distortions in financial statements of companies involved in mining operations. Results. We built an integrated index to estimate the likelihood of misstated financial result in financial statements, i.e. its overstatement, for resource development companies. The paper proves that indicators characterizing distortions in financial statements of resource development companies do not coincide with indicators of construction companies. Conclusions. The test of the proposed approach enabled not only to unveil misstatements in the financial results of companies of two economic sectors, but also to define the amount of overstatements. Furthermore, the paper proves the presence of industry specifics in choosing the indicators that characterize the misstatements of companies.

Study about the Application of Statistical Process Control for Process Quality Improvement in Automotive Industry

2020 ◽  
Vol 896 ◽  
pp. 169-174
Author(s):  
Cristina Ileana Pascu ◽  
Anca Didu ◽  
Stefan Gheorghe
Keyword(s):  
Process Control ◽  
Statistical Process Control ◽  
Manufacturing Process ◽  
Lean Manufacturing ◽  
Statistical Process ◽  
Manufacturing Techniques ◽  
And Control ◽  
A Company

SPC (Statistical Process Control) is one of the Lean Manufacturing techniques, but especially Six Sigma, being a method of improving the quality of the manufacturing process, which allows the identification of errors before their production, with the help of which a process can be supervised and when needed, it is possible to carry out an intervention of regulation, respectively of correction of the process, before being nonconformities. The paper presents a study regarding the use of SPC at a company in the automotive field in order to improve the quality of the manufacturing process for a knuckle. Thus, a number of 25 samples were taken, each sample containing a number of 5 pieces. After sampling, a series of techniques and statistical data were used, respectively diagrams and control sheets, which allowed the determination of the process capability by using MiniTab software.

scholarly journals Policy Analysis of Educational Services for the One Belt One Road Initiative under the covid-19 Epidemic

2021 ◽  
Vol 3 (1) ◽  
pp. 72-91
Author(s):  
Li Tingzhou ◽  
Lu Sha ◽  
Zhao Yuyang ◽  
Li Wanying
Keyword(s):  
Development Strategy ◽  
Educational Services ◽  
Policy System ◽  
One Belt One Road ◽  
Challenges And Opportunities ◽  
International Discourse ◽  
The One ◽  
And Control ◽  
Opening Up

Abstract Education undertakes the era mission of serving China’s external development strategy, and provides comprehensive personnel support, constructive intellectual support, shared humanistic exchanges, and harmonios understanding of value for the interconnections among countries along the One Belt One Road (obor). Since 2014, China’s policies on “education + ‘One Belt One Road’” have been continuously refined and expanded, and a policy system of education’s services for the obor initiative has been initially formed, which providing high-quality and top-level designs for promoting the construction of obor initiative. Educational services for the obor initiative are facing new challenges and opportunities under the global covid-19 epidemic. For example, the international misunderstandings and stigmatizations bring opportunities for introspecting the construction of China’s international discourse system; the traditional cooperation modes of offline education is blocked, which brings opportunities for exploring new forms of educational services; the contents and modes of education are becoming increasingly diversified, putting forward higher requirements for the comprehensive qualities of each educational subject. In the future period of normalization of epidemic prevention and control, it is urgent to improve the quality of educational services by maintaining strategical focuses, such as deepening the educational opening up and cooperation, optimizing the personnel training concepts and teaching modes, and improving the guarantee mechanism.

scholarly journals Management Development Program to Increase Employee Capacity and Responsibility during the Covid-19 Pandemic

2021 ◽  
Vol 2 (1) ◽  
pp. 54-59
Author(s):  
Rahis Rahman ◽  
Mehmood Faheem
Keyword(s):  
Human Resources ◽  
Human Resource Development ◽  
Human Resource ◽  
Development Strategy ◽  
Development Program ◽  
Management Development ◽  
Resource Development ◽  
Work Capacity ◽  
A Company

This article discusses the urgency of a management development program. A development principle that combines experiential learning, classroom learning and learning through others. The program development strategy can run well if it is accompanied by a well-planned human resource and capacity development program. So that it is expected to be able to help achieve the goals in producing high quality human resources. The human resource development strategy is a plan on how the quality of human resources can develop into a better direction and increase their work capacity. and have good loyalty to the company. Human resource development is needed for the continuity of a company so that it can develop more dynamically. because human resources are the most important element in a company.

scholarly journals Strategic Priority for Greening the Kuzbass Economy: Land Rehabilitation Fund

2021 ◽  
pp. 69-78
Author(s):  
Lyudmila I. Vlasyuk
Keyword(s):  
Land Reclamation ◽  
Open Pit ◽  
Open Pit Mining ◽  
Ecological Problem ◽  
Accurate Data ◽  
Monitoring And Control ◽  
Mining Operations ◽  
Disturbed Land ◽  
The One ◽  
And Control

In the article, according to the theory and methodology of strategizing of academician V. L. Kvinta substantiates the strategic priority of greening the economy of Kuzbass: the land reclamation fund. This strategic priority has become part of the one developed by the team of of Lomonosov Moscow state University under the leadership of academician V. L. Kvinta Strategies for socio-economic development of the Kemerovo region — Kuzbass until 2035.The most serious environmental problem of Kuzbass is a significant lag in the rate of land reclamation from the rate of their violation by open mining operations, and the lack of accurate data on the area of disturbed land. The most serious ecological problem of Kuzbass is a significant lag in the rate of land reclamation from the rate of its disturbance by open pit mining, and the lack of accurate data on the area of disturbed land. The creation of the Kuzbass land reclamation fund, as an economic mechanism of financial guarantees, will make it possible to carry out work on the restoration of disturbed lands at the expense of coal mining enterprises, the authorities of the Kemerovo region will ensure monitoring and control over the reclamation behavior.The strategic initiative reflects the interests of Russia localized in the Kemerovo region, the interests of the region and its residents, its implementation will significantly improve the environmental situation in the region, restore the value of the land and ensure the possibility of its further use, including in agriculture and forestry, compatible with comfortable living of people subsoil use in the region. The strategic priority is backed by competitive advantages and all types of resources.

A method to improve the quality of rock preparation for extraction with emulsion explosives in open-pit mines with high benches

2022 ◽  
pp. 62-67
Author(s):  
I.A. Pytalev ◽  
D.V. Domozhirov ◽  
E.E. Shvabenland ◽  
A.A. Prokhorov ◽  
V.V. Pronin
Keyword(s):  
Charge Density ◽  
Blast Hole ◽  
Production Capacity ◽  
Open Pit ◽  
Emulsion Explosive ◽  
Mining Operations ◽  
Emulsion Explosives ◽  
Density Control ◽  
Methodological Principles

Increasing the production capacity of open-pit and strip mines while ensuring the efficiency of the mining enterprise can be achieved through enhancing the quality of rock preparation prior to excavation. The use of emulsion explosives and the transition to the high-bench technology can reduce the cost of mining operations by optimizing the drilling and blasting parameters. The article reviews methods to improve the efficiency of rock preparation for extraction based on the applicable scientific and methodological principles and it proposes a method to regulate the density of emulsion explosives. Schemes are presented for calculation of drilling and blasting parameters when implementing technical measures aimed at improving the blasting quality through rock preparation for extraction in conditions of overburden and mining operations with bench height of 15 m and higher. Parameters of drilling and blasting operations on high benches are justified with differentiation of the charge density along the length of the blast hole by controlling the delivery of the gas-generating additive. A simulation has been performed and the results of pilot tests of the emulsion explosive charge density control at the Ural deposits are presented.

scholarly journals Application of Six Sigma in a company Automotive in Morocco

2021 ◽  
Vol 319 ◽  
pp. 01093
Author(s):  
Fatima Ezzahra Achibat ◽  
Ahmed Lebkiri ◽  
El Mahjoub Aouane
Keyword(s):  
Automotive Industry ◽  
Six Sigma ◽  
Production Lines ◽  
Defect Rate ◽  
New Strategy ◽  
Structured Analysis ◽  
And Control ◽  
A Company ◽  
Dmaic Method

Customer satisfaction is the key to success in all organizations and this satisfaction has a correlational relationship with the quality so that is why we notice that during the last ten years, the automotive sector focuses on the quality whose new strategy reinforces to develop quality and anchors Morocco in the global automotive industry. This article describes the use of Six Sigma through the DMAIC method (Define, Measure, Analyze, Improve and Control) during production lines in a wiring company. The objective is to reduce the defect rate to improve the quality of the product. After defining the workplace and measuring the defect rate, a structured analysis was done to find the root causes and then actions were implemented to reduce the defect rate. To this effect, the deployment of this method has reduces the rate of defects. The use of the Six Sigma method plays a key role in improving the quality of the product as well as financial gains for the different companies.

Resistance Monitor and Control for Vacuum Evaporation of Metals and Carbon

1976 ◽  
Vol 34 ◽  
pp. 572-573
Author(s):  
Russell L. Steere ◽  
Eric F. Erbe ◽  
J. Michael Moseley
Keyword(s):  
Electronic Device ◽  
Point Sources ◽  
High Contrast ◽  
Variable Resistor ◽  
Quality Of Results ◽  
Low Contrast ◽  
Evaporation Source ◽  
And Control ◽  
At Will

We have designed and built an electronic device which compares the resistance of a defined area of vacuum evaporated material with a variable resistor. When the two resistances are matched, the device automatically disconnects the primary side of the substrate transformer and stops further evaporation.This approach to controlled evaporation in conjunction with the modified guns and evaporation source permits reliably reproducible multiple Pt shadow films from a single Pt wrapped carbon point source. The reproducibility from consecutive C point sources is also reliable. Furthermore, the device we have developed permits us to select a predetermined resistance so that low contrast high-resolution shadows, heavy high contrast shadows, or any grade in between can be selected at will. The reproducibility and quality of results are demonstrated in Figures 1-4 which represent evaporations at various settings of the variable resistor.

ENRICHING MEDIA MERCHANDISE SARANA PENUNJANG PROMOSI STUDI KASUS PADA BOOKSTORE

CCIT Journal ◽  
2014 ◽  
Vol 7 (3) ◽  
pp. 420-436
Author(s):  
Dewi Immaniar ◽  
Sudaryono Sudaryono ◽  
Ayu Ningrum
Keyword(s):  
Visual Media ◽  
Test Duration ◽  
Media Campaign ◽  
Business World ◽  
Retail Business ◽  
The Media ◽  
Media Types ◽  
The Times ◽  
A Company

Talk about retail business can not be separated from the importance of service to consumers and good quality goods . But at the present time due to intense competition in the business world , the service and quality of goods is not enough to be able to increase revenue and attract customers loyal . This makes companies think hard to survive and stable in the business . One of them is by using a media campaign in this regard more toward print or visual media is indirectly felt the value of their effectiveness in communicating product marketing programs . PT . Times Prima Indonesia is a company engaged in the retail book with the name of the Times bookstores . Based on the analysis of the company’s problems requires additional media types supporting more varied and creatif promotion of existing ones, which will be used as a complement and a media campaign as well as to enrich the data renewal campaign design to capture the interest of consumers in which one form of the media campaign is shaped merchandise . Therefore , do Enriching ( enrich ) media campaign merchandise before it is less varied and has not formed a company image . The methodology used is the analysis, observation and design . Besides the new design has been tested with the implemented test duration for 6 months, and greatly increases the perceived contribution , this is evidenced by the chart sales increasing each month.

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