scholarly journals Development Trends of the Cement Industry in Uzbekistan

2021 ◽  
Vol 7 (6) ◽  
Author(s):  
D. Khairova ◽  
M. Sayfullaeva
Keyword(s):  
Technological Process ◽  
Production Technology ◽  
Cement Industry ◽  
Construction Work ◽  
Development Trends ◽  
Cement Production ◽  
Manufacturing Enterprises ◽  
Advantages And Disadvantages ◽  
Cement Manufacturing

The article provides an overview and analysis of the cement industry in Uzbekistan. The authors analyzed the volume of construction work, the volume of production and sales of cement products on the exchange, as well as the target parameters of the production of cement products in 2019–2025. Particular attention is paid to the technological process of cement production, in particular dry and wet methods. The advantages and disadvantages of each production technology are presented in detail. The authors reviewed the existing and projected cement manufacturing enterprises in Uzbekistan.

Carbon Management in an Emissions-Intensive Industry in a Developing Economy: Cement Manufacturing in Indonesia

2018 ◽  
Vol 2 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Togar W. S. Panjaitan ◽  
Paul Dargusch ◽  
Ammar A. Aziz ◽  
David Wadley
Keyword(s):  
Alternative Fuels ◽  
Cement Industry ◽  
Cement Production ◽  
Carbon Management ◽  
Production And Consumption ◽  
Carbon Dioxide Equivalents ◽  
Strategic Position ◽  
Reduce Emissions ◽  
Cement Manufacturing ◽  
Capital Intensive

Around 600 Mt carbon dioxide equivalents (CO2e) of anthropogenic greenhouse gases (GHG) emission originates from energy production and consumption in Indonesia annually. Of this output, 40 Mt CO2e comes from cement production. This makes the cement industry a key sector to target in Indonesia’s quest to reduce its emissions by 26% by 2020. Substantial opportunities exist for the industry to reduce emissions, mainly through clinker substitution, alternative fuels, and the modernization of kiln technologies. However, most of these abatement options are capital intensive and considered as noncore business. Due to this, the private sector is unlikely to voluntarily invest in emission reduction unless it saves money, improves revenue, enhances the strategic position of the firm, or unless governments provide incentives or force adoption through regulatory and policy controls. In this study, we review the profile of the Indonesian cement industry and assess the carbon management and climate policy actions available to reduce emissions. The case highlights opportunities for improved carbon management in emission-intensive industries in developing countries.

scholarly journals ENVIRONMENTAL AND OCCUPATIONAL NOISE MANAGEMENT PROCESS IN CEMENT INDUSTRY

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
MARIJA HADŽI-NIKOLOVA ◽  
DEJAN MIRAKOVSKI ◽  
NIKOLINKA DONEVA ◽  
NATAŠA BAKRESKA
Keyword(s):  
Manufacturing Process ◽  
Energy Use ◽  
Process Management ◽  
Noise Control ◽  
Raw Materials ◽  
Cement Industry ◽  
Control Measures ◽  
Cement Plant ◽  
Cement Production ◽  
Cement Manufacturing

The main environmental issues associated with cement production are the consumption of raw materials, energy use and emissions in the air. Noise emissions occur throughout the whole cement manufacturing process - from preparing and processing raw materials, from the clinker burning and cement production process, from material storage as well as from the dispatch and shipping of the final products. The heavy machinery and large fans used in the cement manufacturing process can give rise to noise emissions. Cement Plants are required to comply with standards for reduction in line with national legislation, and to conduct measurements and perform noise surveys. Having this in mind, A TITAN Group Usje Cement Plant in Skopje, following their strong commitment to high environmental performance and Corporate Social Responsibility and Sustainable Development Policy in 2013-2014 have engaged an AMBICON Lab (Faculty of Natural and Technical Sciences) from Stip, to conduct a Noise Control Study in order to identify noise sources within cement plant and marl quarry, determine their impacts on nearby residents and develop noise control/protection strategies. During the past three years, the Usje Cement plant has implemented most of the noise control measures proposed in this Study. Also, a follow-up study during 2016-2017 was conducted in order to assess the effectiveness of measures taken. This paper presents the outcomes of noise reduction measures taken. Keywords: noise, cement industry, process management, measures, environment

REDUCTION OF CO2 EMISSIONS IN CEMENT PRODUCTION BY USING PREHEATER

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Haiyan Xie ◽  
Pranshoo Solanki ◽  
Alireza Mojadam ◽  
Wenfang Liu
Keyword(s):  
Construction Industry ◽  
Cement Industry ◽  
Cement Production ◽  
Dry Process ◽  
Alternative Technologies ◽  
The Us ◽  
Potential Benefits ◽  
Potential Factors ◽  
Cement Manufacturing ◽  
Reduction Of Co2

Cement has a pivotal role in the construction industry. However, cement is one of the key contributors to global CO2 emission levels. This is due to the energy-intensive nature of cement production processes. This comparative-descriptive study focuses on the potential factors to reduce the CO2 emission level in cement production and the decision-making process of adopting new environmental-friendly technology in production. Particularly, this study compares alternative technologies in cement manufacturing to reduce CO2 emission. It collects both the industry data and the data from Texas, which is the biggest contributor to CO2 emission in the US, to analyze how a shift in production technology could affect CO2 emission and eventually improve the outcomes of environment protection and energy efficiency. This paper projects a possible improvement of implementing the method of preheater-precalciner in cement production in lieu of wet and long-dry process to upgrade kilns and reduce problematic CO2 emission. This study suggests shifting from wet and dry kilns to preheater-precalciner systems to obtain the potential benefits of CO2 emission reduction in the cement industry.

scholarly journals Process based system models for detecting opportunities and threats – the case of World Cement Production

2016 ◽  
Vol 8 (3) ◽  
pp. 246-262 ◽  
Author(s):  
Raine Isaksson
Keyword(s):  
Global Warming ◽  
Carbon Emissions ◽  
Cement Industry ◽  
System Model ◽  
Sense Making ◽  
Cement Production ◽  
Content Type ◽  
System Models ◽  
Work Related ◽  
Cement Manufacturing

Purpose Visualising change needs could be complex. One way of sense-making is to use process-based system models. Global warming requires major changes in many fields and especially for cement manufacturing, which represents a growing portion of man-made carbon emissions. The industry has proposed measures for change, but it is difficult to assess how good these are and more sense-making is needed to clarify the situation. The purpose of this paper is to visualise opportunities and threats for global cement manufacturing in the context of global warming, using a process-based system model. Design/methodology/approach Available data for cement manufacturing and for carbon emissions are combined both historically and as predictions based on chosen key performance indicators. These indicators are related to a chosen process-based system model. Findings The results indicate that the global cement industry does not have a viable plan to reduce carbon emissions sufficiently to comply with the objectives of maintaining global warming below 2°C. The application of the process-based system model indicates that it has the ability to visualise important opportunities and threats at the level of global processes. Practical implications The challenges of the world cement industry with reducing carbon emissions are highlighted. This information could be useful as a driver for change. Originality/value The paper provides insights into process-based improvement work related to cement industry carbon emissions.

scholarly journals Health Risk and Environmental Assessment of Cement Production in Nigeria

Atmosphere ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1111 ◽  
Author(s):  
Mmemek-Abasi Etim ◽  
Kunle Babaremu ◽  
Justin Lazarus ◽  
David Omole
Keyword(s):  
World Bank ◽  
Air Pollutants ◽  
Carbon Capture ◽  
Manufacturing Industry ◽  
Crop Yields ◽  
Combined Cycle ◽  
Cement Industry ◽  
Cement Production ◽  
Cement Manufacturing ◽  
And Storage

The cement manufacturing industry has played a fundamental role in global economic development, but its production is a major facilitator to anthropogenic CO2 release and solid waste generation. Nigeria has the largest cement industry in West Africa, with an aggregate capacity of 58.9 million metric tonnes (MMT) per year. The Ministry for Mines and Steel Development asserts that the nation possesses total limestone deposits of around 2.3 trillion MT with 568 MMT standing as established reserves and 11 MMT used. Cement industries are largely responsible for releasing air pollutants and effluents into water bodies with apparent water quality deterioration over the years. Air pollution from lime and cement-producing plants is seen as a severe instigator of occupational health hazards and work-related life threats, negatively affecting crop yields, buildings, and persons residing in the vicinity of these industries. World Bank observed in 2015 that 94% of the Nigerian populace is susceptible to air pollutants that surpass WHO guidelines. In 2017, World Bank further reported that 49,100 premature deaths emanated from atmospheric PM2.5, with children beneath age 5 having the greatest vulnerability owing to lower respiratory infections, thereby representing approximately 60% of overall PM2.5-induced deaths. Cement manufacturing involves the significant production of SO2, NOx, and CO connected to adverse health effects on humans. Sensitive populations such as infants, the aged, and persons having underlying respiratory ailments like asthmatics, emphysema, or bronchitis are seen to be most affected. Consequently, in addressing this challenge, growing interests in enacting carbon capture, usage, and storage in the cement industry is expected to alleviate the negative environmental impact of cement production. Still, no carbon capture technology is yet to achieve commercialization in the cement industry. Nonetheless, huge advancement has been made in recent years with the advent of vital research in sorption-enhanced water gas shift, underground gasification combined cycle, ammonium hydroxide solution, and the microbial-induced synthesis of calcite for CO2 capture and storage, all considered sustainable and feasible in cement production.

METHODS AND TOOLS OF CEMENT PRODUCTION PROCESS (COMPARATIVE ANALYSIS), POTENTIAL OF UZBEKISTAN IN THIS AREA

2020 ◽  
Vol 2020 (4) ◽  
pp. 193-198
Author(s):  
Khudaykulov Umid ◽  
◽  
S Turgunbayev
Keyword(s):  
Production Process ◽  
Cement Industry ◽  
Structure And Properties ◽  
Drying Method ◽  
Cement Production ◽  
Advantages And Disadvantages ◽  
Initial Appearance ◽  
History Of ◽  
Technological Methods ◽  
Physicochemical Structure

the article describes the history of cement use, its initial appearance, cement composition and its physicochemical structure and properties, types of cement and classifications of cement. Cement production processes, technological methods used in production, advantages and disadvantages of the methods and technological stages of the production process by the drying method of cement production are covered. A study of the cement industry and processes in the country was conducted, which summarized the most priority methods and processes of cement production based on the natural resources, climate and potential of Uzbekistan.

scholarly journals Recent Progress in Green Cement Technology Utilizing Low-Carbon Emission Fuels and Raw Materials: A Review

2019 ◽  
Vol 11 (2) ◽  
pp. 537 ◽  
Author(s):  
Ali Naqi ◽  
Jeong Jang
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Alternative Fuels ◽  
Raw Materials ◽  
Low Cost ◽  
Cement Industry ◽  
Industrial Wastes ◽  
Low Carbon ◽  
Cement Production ◽  
Cement Manufacturing

The cement industry is facing numerous challenges in the 21st century due to depleting natural fuel resources, shortage of raw materials, exponentially increasing cement demand and climate linked environmental concerns. Every tonne of ordinary Portland cement (OPC) produced releases an equivalent amount of carbon dioxide to the atmosphere. In this regard, cement manufactured from locally available minerals and industrial wastes that can be blended with OPC as substitute, or full replacement with novel clinkers to reduce the energy requirements is strongly desirable. Reduction in energy consumption and carbon emissions during cement manufacturing can be achieved by introducing alternative cements. The potential of alternative cements as a replacement of conventional OPC can only be fully realized through detailed investigation of binder properties with modern technologies. Seven prominent alternative cement types are considered in this study and their current position compared to OPC has been discussed. The study provides a comprehensive analysis of options for future cements, and an up-to-date summary of the different alternative fuels and binders that can be used in cement production to mitigate carbon dioxide emissions. In addition, the practicalities and benefits of producing the low-cost materials to meet the increasing cement demand are discussed.

scholarly journals Cement Types, Composition, Uses and Advantages of Nanocement, Environmental Impact on Cement Production, and Possible Solutions

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
S. P. Dunuweera ◽  
R. M. G. Rajapakse
Keyword(s):  
Environmental Impact ◽  
Raw Materials ◽  
Environmental Pollutants ◽  
Cement Industry ◽  
Sri Lankan ◽  
Cement Production ◽  
Different Types ◽  
Graphite Nanoparticles ◽  
Cement Manufacturing ◽  
Physical Treatments

We first discuss cement production and special nomenclature used by cement industrialists in expressing the composition of their cement products. We reveal different types of cement products, their compositions, properties, and typical uses. Wherever possible, we tend to give reasons as to why a particular cement type is more suitable for a given purpose than other types. Cement manufacturing processes are associated with emissions of large quantities of greenhouse gases and environmental pollutants. We give below quantitative and qualitative analyses of environmental impact of cement manufacturing. Controlling pollution is a mandatory legal and social requirement pertinent to any industry. As cement industry is one of the biggest CO2 emitters, it is appropriate to discuss different ways and means of CO2 capture, which will be done next. Finally, we give an account of production of nanocement and advantages associated with nanocement. Nanofillers such as nanotitania, nanosilica, and nanoalumina can be produced in large industrial scale via top-down approach of reducing size of naturally available bulk raw materials to those in the nanorange of 1 nm–100 nm. We mention the preparation of nanotitania and nanosilica from Sri Lankan mineral sands and quartz deposits, respectively, for the use as additives in cement products to improve performance and reduce the amount and cost of cement production and consequent environmental impacts. As of now, mineral sands and other treasures of minerals are exported without much value addition. Simple chemical modifications or physical treatments would add enormous value to these natural materials. Sri Lanka is gifted with highly pure quartz and graphite from which silica and graphite nanoparticles, respectively, can be prepared by simple size reduction processes. These can be used as additives in cements. Separation of constituents of mineral sands is already an ongoing process.

scholarly journals Determination of Optimal Clinker Factor in Cement Production by Chemical Grinding Aids Addition

2015 ◽  
Vol 776 ◽  
pp. 223-228
Author(s):  
Titut Eryanto ◽  
Elita Amrina
Keyword(s):  
Production Process ◽  
Co2 Emission ◽  
Environmental Problem ◽  
Green Manufacturing ◽  
Cement Industry ◽  
Cement Production ◽  
Grinding Aids ◽  
The World ◽  
Cement Manufacturing

The cement industry has remarked as an intensive consumer of energy. The amount of energy consumed in the cement manufacturing has a correlation to the increasing of CO2 emission. It is reported that the cement Industry has contributed to 5–7% of the total CO2 emission in the world. Thus, there is a need to make an innovation in order to overcome the environmental problem. One of effort can be made is by using chemical grinding aids (CGA) as an additive material in the cement production process. This study aimed to determine the optimal clinker factor of the cement production by the addition of chemical grinding aids (CGA). The experiments are conducted in PT Semen Padang consisting of four variable of the clinker factor without CGA and with CGA addition 300 ppm. The clinker factor varies from 78.3% to 72.9%. The results show that the optimal clinker factor is at 74.5% with the CGA addition 300 ppm. It can improve the cement fineness to 3848cm2/gr and decrease the sieving R45μ to 10%. In addition, the strength of the cement produced is higher than the standard. The findings show the chemical grinding aids (CGA) addition in the cement production process can reduce the clinker factor as well as reducing the CO2 emissions. It can aid the cement industry to achieve the higher performance in green manufacturing and so as to increase the competitiveness.

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