scholarly journals SIMULATION-DRIVEN DEVELOPMENT FOR COARSE COMMINUTION PROCESS - A CASE STUDY OF GEITA GOLD MINE, TANZANIA USING PLANTSMITH PROCESS SIMULATOR

2021 ◽  
Vol 1 ◽  
pp. 2681-2690
Author(s):  
Kanishk Bhadani ◽  
Gauti Asbjörnsson ◽  
Paul Bepswa ◽  
Aubrey Mainza ◽  
Elibariki Andrew ◽  
...  
Keyword(s):  
Raw Material ◽  
Processing Plant ◽  
Operational Strategies ◽  
Comminution Process ◽  
System Maintenance ◽  
Minerals Processing ◽  
The Cost ◽  
Crushing Plant ◽  
Process Simulator

AbstractA comminution process is a material size reduction and separation process which is primarily used in the aggregates and the minerals processing industry. Knowledge related to equipment’s operation, raw material properties, operational strategies, control system, maintenance, etc. is needed to design a capable plant. New needs are arising from the industry for existing operational crushing plants such as investigation for improvements, upscaling, and downscaling of the capacity. The paper presents an application of simulation-driven development for a crushing plant in an existing gold processing plant. Due to the change in ore characteristics and the need for optimizing the cost of operation, it is required to investigate the opportunities for improvement and alternative options for downscaling the capacity of the plant. A systematic process for configuring, developing, and evaluating alternative concepts using a process simulation tool is presented. The results show the process of generating knowledge for alternative crushing plant operation settings and how the choices can be selected and eliminated using boundary conditions. The evaluation presents possible improvements and alternative concepts with their opportunities and pitfalls.

scholarly journals Effects of zero defects approach-a case study at an Indian industry

2018 ◽  
Vol 7 (2.21) ◽  
pp. 367
Author(s):  
K Karunakaran ◽  
R Saravanan ◽  
P Venkumar ◽  
R Sridha
Keyword(s):  
Value Added ◽  
Efficient Solutions ◽  
Raw Material ◽  
Success Story ◽  
Total Productive Maintenance ◽  
Quality Cost ◽  
Scientific Approach ◽  
The Cost ◽  
Quality Tools

Quality is free when reaches zero defects, quality is measured various aspects. The rework is carried out when the product finish not up to the standard, which added additional expenditure. On other side if there is no chance for rework the cost of raw material and value added cost up to that non conformity is lost. This work shares a success story and reveals a systematic scientific approach to reach zero defects. The case study conducted in the leading supplier who focuses on climate and energy efficient solutions. The traditional powerful quality tools employed to focus, understanding and analyse the problem. The Decision support system preferred and adopted to solve the problem with affordable cost. The outcomes of this work measured in terms of modern Total Productive Maintenance style that is in terms of Productivity, Quality, Cost, Delivery, Safety, Motivation and Morale (PQCDSM). The results in all the way found more significant. 

scholarly journals Economies of Capacity Use in Decontamination of Pig Carcasses

2013 ◽  
Vol 45 (1) ◽  
pp. 125-138 ◽  
Author(s):  
Jørgen Dejgård Jensen ◽  
Lartey Godwin Lawson ◽  
Mogens Lund
Keyword(s):  
Cost Effectiveness ◽  
Risk Reduction ◽  
Hot Water ◽  
Low Risk ◽  
Processing Plant ◽  
Water Decontamination ◽  
Plant Level ◽  
Pig Carcasses ◽  
The Cost

This article analyzes the economies of capacity use regarding hot water decontamination to reduce postslaughter risk of pathogens in meat, taking interfarm heterogeneities of Salmonella risk and costs of transportation into account, using Denmark as a case study. If risk reduction goals are stated at the processing plant level, then the exploitation of the favorable cost-effectiveness properties of hot water slaughtering requires fairly ambitious risk reduction goals and thus high use of decontamination capacity. If instead risk reduction goals are formulated for the sector as a whole, the cost-effectiveness properties can be exploited even for relatively low-risk reduction goals.

scholarly journals Estimating the Cost-Competitiveness of Recycling-Based Geopolymer Concretes

Recycling ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 46
Author(s):  
Annastiina Rintala ◽  
Jouni Havukainen ◽  
Mariam Abdulkareem
Keyword(s):  
Carbon Price ◽  
Global Scale ◽  
Cement Industry ◽  
Environmental Benefits ◽  
Raw Material ◽  
Low Carbon ◽  
Carbon Pricing ◽  
Cost Competitiveness ◽  
The Cost

The cement industry is a major contributor to greenhouse gas emissions on a global scale. Consequently, there has been an increasing interest, in both academia and business, in low-carbon concretes in which Ordinary Portland Cement (OPC) is partially or fully replaced with industrial side streams. However, the realization of the environmental benefits of such materials depends on how competitive they are in the construction market, where low costs are a major competitive factor. This is not straightforward, as many types of concretes exist. Raw material prices vary, and costs can be influenced by governmental regulations via carbon pricing. This study presents a case study estimating the cost prices of four different geopolymer concretes with different material compositions and carbon footprints, considering the raw material price variability and the potential impact of carbon emissions regulation (carbon price). The case study demonstrates how material mix cost comparisons can be made openly and systematically. The results imply that carbon pricing, at the rates currently applied, does not significantly change the cost price difference between traditional and geopolymer concretes. Instead, cost-competitiveness of low carbon concretes depends heavily on the material mix type and the availability of critical side streams.

scholarly journals Essential Latex Processing Plant (ELPP): A Pioneer Approach in the Production of Concentrate Latex from Local Resource to Manufacture Male Contraceptive in Bangladesh

2014 ◽  
Vol 27 (2) ◽  
pp. 11-14
Author(s):  
Sadia Afreen ◽  
Kh Rashedul Haque ◽  
Md Shariful Islam ◽  
M Kadrul Huda
Keyword(s):  
Cost Analysis ◽  
Chemical Engineering ◽  
Cost Effective ◽  
Raw Material ◽  
Processing Plant ◽  
Rubber Content ◽  
Local Resource ◽  
Male Contraceptive ◽  
Local Resources ◽  
The Cost

For years, a respective amount of PV latex has been exported from Malaysia to manufacture male contraceptives within the country. Recently, a project titled as ELPP, has been undertaken by the Govt. Pharmaceutical Company „Essential Drugs Company Ltd? to pioneer the implementation of processing natural raw latex (35-40% dry rubber content) [1] into concentrate latex (60% dry rubber content) [1] from the local resource at Modhupur region. The purpose of this project is to produce concentrate latex from local resource as the raw material for manufacturing male contraceptive instead of importing the latex from Malaysia or other countries. Several trials have been taken place to test the feasibility and productivity of the project with respect to the aspects in Bangladesh. The results and observations are found very satisfactory and the project is very much cost effective since it cuts off the foreign expense caused due to the import of concentrate latex from abroad at present days. An overall cost analysis shows that if the technology of processing concentrate latex is implemented with a proper utilization of the local resources it reduces the cost of production to a great extent. Moreover, rubber sheets produced as the byproduct from this process are very much useful and demandable in the field of rubber industries and add profit to the process. DOI: http://dx.doi.org/10.3329/jce.v27i2.17777 Journal of Chemical Engineering, IEB Vol. ChE. 27, No. 2, December 2012: 11-14

scholarly journals Economic and environmental side of the use of biotechnologies Case Study: Synthesis of some bioplastics from algae

2019 ◽  
Vol 12 (42) ◽  
pp. 131-136
Author(s):  
Abeer Naesa ◽  
Reabal Mona ◽  
Ahmad Ibrahim Kara-Ali ◽  
Hussam Eddin Laika
Keyword(s):  
Greenhouse Gases ◽  
Raw Materials ◽  
Low Cost ◽  
Biodegradable Plastics ◽  
Plastic Waste ◽  
Raw Material ◽  
Alkaline Water ◽  
The Cost ◽  
Plastics Industry

Abstract Disposal of plastic waste is a serious problem, because plastics accumulate in the environment and cause significant pollution due to their degradability. Therefore, the main objective of this research was to reach the biodegradable plastics industry as alternatives to non-biodegradable plastics. And the existence of such biodegradable plastic must contribute in reducing the emission of harmful greenhouse gases and keeps the environment clean, and reduces the cost for pollution from the accumulation of plastic waste. Algae was used as a raw material for the production of bio-plastics because of its unique properties such as it grows rapidly and in large quantities at a low cost and grows in a variety of water environments throughout the year, which means that there is no risk in the difficulty of securing the raw materials needed for the production of bio-plastics The study concluded that the tested samples partially decomposed in fresh and alkaline water during a period of 26 days, which means a high dependence on algae to the production of bio plastics as an environmentally friendly industry.

Cost Reduction of Raw Materials in a Steel Factory with Implementation of Mix Problem (A Case Study)

2012 ◽  
Vol 433-440 ◽  
pp. 2178-2183
Author(s):  
Hamid Reza Moheghi ◽  
Hamid Mashhadi Moghadam ◽  
Sara Motevali
Keyword(s):  
Raw Materials ◽  
Cost Minimization ◽  
Steel Production ◽  
Optimal Solution ◽  
Raw Material ◽  
Model Parameters ◽  
The Cost ◽  
Production Company ◽  
The Mathematical Model

Material cost decrease is an important issue for industrial factories. Operations Research is considered as a proper means for this purpose. A steel production company as a case study is presented in this paper. The combination of raw material is important in steel production. In the company raw materials are mixed experimentally without attention to cost minimization. After considering the process of steel production, a mix model is determined as a proper model for lowering the cost of production in the company. At first, we study the mix problem. Then, we deal with the quantities of the model parameters as well as a mathematical modeling based on the proper constraints. Finally, the solution to the mathematical model is created by a software .The model solution shows that the proposed optimal solution leads to cost minimization significantly.

scholarly journals Lean Construction in a Real Estate Project – A Case Study

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
K. Srinivas
Keyword(s):  
Construction Projects ◽  
Lean Construction ◽  
Raw Material ◽  
Construction Techniques ◽  
Real Estate Project ◽  
Integrated Project ◽  
Project Estimation ◽  
The Cost ◽  
Tools And Techniques

More than 70% of construction projects are over budget and delivered beyond thebudgeted time. To overcome the same, the concept of lean integrated project deliverycame into existence. Lean culture focuses on customer by empowering employees. Itinvolves in converting waste into value by reducing waste, improving communication, andpromoting teamwork integration through a common set of tools and techniques. Aim oflean construction is to achieve the affordable cost with optimum utilization of man,material and machinery. Wastes in construction industry which do not add value are supplyin excess materials in inventory for raw material, work in progress, finished goods etc.Waiting for preceding activity, over processing and defects can be reduced through leanconstruction. This paper deals with lean construction techniques for identifying the wastein a construction project and eliminating the same. . In this project estimation of a buildingis done to find cost of the project with respect to specifications and compared thetraditional methods used and lean construction techniques to reduce the cost and improvethe quality in less time with lower cost to satisfy the customer.

Resource efficiency in deinked pulp production: a review

TAPPI Journal ◽  
2014 ◽  
Vol 13 (11) ◽  
pp. 37-43 ◽  
Author(s):  
LIISA KOTANEN ◽  
MIKA KÖRKKÖ ◽  
ARI ÄMMÄLÄ ◽  
JOUKO NIINIMÄKI
Keyword(s):  
Waste Disposal ◽  
Resource Efficiency ◽  
Raw Material ◽  
Ecological Strategy ◽  
Recycled Paper ◽  
Paper Production ◽  
Recycled Pulp ◽  
Current State ◽  
The Cost ◽  
Pulp Production

The use of recovered paper as a raw material for paper production is by far the most economical and ecological strategy for the disposal of waste paper. However, paper production from recovered paper furnish generates a great amount of residues, and the higher the demand requirements for the end product, the higher the amount of rejected material. The reason for this is that the selectivity of the deinking process is limited; therefore, some valuable components are also lost in reject streams. The rejection of usable components affects the economics of recycled paper production. As the cost of waste disposal continues to increase, this issue is becoming more and more severe. This paper summarizes the current state of the resource efficiency in recycled pulp production and provides information on the volumes of rejected streams and the usable material within them. Various means to use these reject streams are also discussed, including the main findings of a recent thesis by the main author. This review summarizes current internal and external use of reject streams generated in the deinking operations.

Developing Schedule With Linear Programming (Case Study: STTF II Project Komplek Sukamukti Banjaran)

2020 ◽  
Vol 4 (02) ◽  
pp. 34-45
Author(s):  
Naufal Dzikri Afifi ◽  
Ika Arum Puspita ◽  
Mohammad Deni Akbar
Keyword(s):  
Linear Programming ◽  
Objective Function ◽  
Project Scheduling ◽  
Time Limit ◽  
Minimum Time ◽  
Service Cost ◽  
Trade Off ◽  
Overtime Work ◽  
The Cost

Shift to The Front II Komplek Sukamukti Banjaran Project is one of the projects implemented by one of the companies engaged in telecommunications. In its implementation, each project including Shift to The Front II Komplek Sukamukti Banjaran has a time limit specified in the contract. Project scheduling is an important role in predicting both the cost and time in a project. Every project should be able to complete the project before or just in the time specified in the contract. Delay in a project can be anticipated by accelerating the duration of completion by using the crashing method with the application of linear programming. Linear programming will help iteration in the calculation of crashing because if linear programming not used, iteration will be repeated. The objective function in this scheduling is to minimize the cost. This study aims to find a trade-off between the costs and the minimum time expected to complete this project. The acceleration of the duration of this study was carried out using the addition of 4 hours of overtime work, 3 hours of overtime work, 2 hours of overtime work, and 1 hour of overtime work. The normal time for this project is 35 days with a service fee of Rp. 52,335,690. From the results of the crashing analysis, the alternative chosen is to add 1 hour of overtime to 34 days with a total service cost of Rp. 52,375,492. This acceleration will affect the entire project because there are 33 different locations worked on Shift to The Front II and if all these locations can be accelerated then the duration of completion of the entire project will be effective

Sign in / Sign up

Export Citation Format

Share Document