scholarly journals Technological Trends in the Use of Natural Marble Residue in the Cement Portland Production from Prospecting in Patent Documents

2021 ◽  
Vol 11 (4) ◽  
pp. 5671-5679
Author(s):  
Luara Batalha Vieira ◽  
Giulia Costa Ghirardi ◽  
Josiane Dantas Viana ◽  
Larissa Da Silva Paes Cardoso ◽  
Cleber Marcos Ribeiro Dias
Keyword(s):  
Construction Industry ◽  
Raw Materials ◽  
Raw Material ◽  
Cement Matrix ◽  
Cement Production ◽  
Ornamental Stone ◽  
Matrix Products ◽  
Production Cycles ◽  
Stone Cutting ◽  
Marble Waste

The civil construction industry affects the environment mainly due to the high generation of waste and extraction of natural raw materials. However, this industry is also responsible for absorbing a large part of the waste, not only generated by itself, but also those generated in other production cycles. These residues are often reused as an alternative raw material, after some treatment. The use of ornamental stone cutting waste has already been studied by many authors, and it is a technically viable alternative in cement matrix products for civil construction. Thus, this technological prospection work analyzed the technological trends regarding the use of marble waste in cement production, based on the registration of patents in recent years. For this, a search was carried out in the Brazilian Nacional Institute of Intellectual Property (INPI) and Dewert Innovation Index (DII) databases, in April 2021, with no period limitation. The main documents were found in the DII database, and the results showed that among the countries that filed a patent on this subject, China is the country with the highest number of filings, with the majority of these filings occurring between 2014 and 2020, suggesting a reflection of the current interest in ways to give an adequate destination to ornamental stone waste.

Development of a Raw Material Requirement Balancing Model for a Production Process

2013 ◽  
Vol 824 ◽  
pp. 490-498
Author(s):  
B. Kareem
Keyword(s):  
Production Process ◽  
Raw Materials ◽  
Raw Material ◽  
Programming Approach ◽  
Good Tool ◽  
Cement Production ◽  
Optimal Mix ◽  
Material Requirement ◽  
Conventional Material ◽  
Crushed Limestone

Attainment of accuracy in raw materials mix for production processes has been the major problem in many production organizations in developing countries. Effects of unequal proportions of material required for a production process are not fully considered in the past studies. This study modeled the raw material requirements in a production process using proportionality based mixed linear programming approach. The objective was to find optimal mix of raw materials for the production of a unit tonnage of a product. The performance of the model was tested by comparing it with alternatively formulated model based on conventional material mix. This model was tested using a cement production system from which blasted limestone, crushed limestone; raw meal, gypsum, red alluvium, clinker and coal were used as raw materials. The conventional method of mixing materials led to 50 % surplus and shortage of materials in the process as compared with the new scheme. The model would be a good tool for accurate prediction of quantity of the raw material required in the production process.Nomenclature, the proportion of material used per ton of the processed product, the quantity of material in processed product (ton), the material proportional per ton of the product, andthe total quantity of materials needed per ton of the product,..., the counter for material type,..., the counter for material proportionality variant

scholarly journals Metode Menentukan Klor dalam Sludge Oil: Perbandingan Metode Wet dan Metode Jena

2021 ◽  
Vol 10 (1) ◽  
pp. 1-7
Author(s):  
Herliati Rahman ◽  
Akhirudin Salasa
Keyword(s):  
Environmental Sustainability ◽  
Alternative Fuels ◽  
Negative Impact ◽  
Raw Materials ◽  
Cement Industry ◽  
Raw Material ◽  
Chlorine Content ◽  
Cement Production ◽  
Average Accuracy ◽  
The Difference

Currently, the use of alternative fuels and raw materials (AFR) in the cement industry is very attractive. This is driven by demands for environmental sustainability and the efficiency of fuel and raw material costs. One of the materials that can be used as AFR is sludge oil. However, it needs to be ensured that the chlorine content in the sludge oil does not exceed the threshold so that it does not have a negative impact during the cement production process. It is known that if the chlorine content is more than the threshold, it can cause blocking or clogging of the separator and the kiln. This study aims to determine the performance of the Jena Multi EA 4000 instrument in determining the chlorine content in sludge oil quickly and accurately. Analytic Jena Multi EA 4000 is an Atomic Absorption Spectrometers (AAS) instrument that can be used for analysis of samples in the form of solids or slurries containing chlorine. As validation of the resulting analysis, the wet method is used, which as usual, to determine chlorine levels. From the statistic analysis, namely the F-test and T-test, We found that F-count equal to 0.0080 and F-table equal to 4.2839. it shows that F-count < F-table, indicating the difference in the variance of the two methods H0: s12 = s22 is accepted because there is no difference to the variability of these two tests and the value of T-count = -3.9717 and T-table = 2.1788 so that T-count <T-table is accepted because there is no difference in the average accuracy of the two methods H0: M1 = M2.  

scholarly journals A Review on Utilizing the Marine Biorefinery Waste in Construction Raw Materials to Reduce Land Pollution and Enhance Green Environment

2021 ◽  
Vol 21 (3) ◽  
pp. 43-62
Author(s):  
Monisha Ravi ◽  
Balasubramanian Murugesan ◽  
Arul Jeyakumar ◽  
Kiranmayi Raparthi
Keyword(s):  
Construction Industry ◽  
Raw Materials ◽  
Construction Material ◽  
Raw Material ◽  
Construction Sector ◽  
Huge Amount ◽  
Material Usage ◽  
Shell Waste ◽  
Cement And Concrete ◽  
Marine Waste

Abstract This research mainly concentrates on eco-friendly construction material. Production of cement and concrete industries release huge amount of carbon dioxide (CO2) and greenhouse gases which affect the environment and also there is a demand in construction material by man-made or nature. The construction sector finds an economic and eco-friendly cement replacement material to achieve the demand for green concrete that improve the energy conservation and better energy saving material. In marine Bio-refinery waste produce huge quantity of calcium carbonate, whose disposal is cause of major concern. Pre-eminent solution for this problem is utilizing the marine shell waste in cement and concrete. It revises the manufacturing process to reduce the raw material usage in production and adoptable material for global warming. Therefore, the researchers focus on marine waste sea shells as the replacement material in construction industry to save the energy and also give sustainable green material. As per the previous studies by the researchers to determine the chemical composition, specific gravity, water absorption, particle size distribution of seashells and also compressive, flexural and tensile strength of concrete. It shows the seashell is filler material that slightly increases the strength when compared to the conventional materials and therefore the sea shells are suitable for the construction field to manufacture the cement and concrete with eco-friendly manner.

Specifics of Structure Formation of Cement Stone with Silica Raw Material - A Substrate of Photocatalytic Composite Material

2021 ◽  
Vol 1017 ◽  
pp. 153-162
Author(s):  
Viktoriya V. Nelyubova ◽  
Yulia N. Ogurtsova ◽  
M.N. Sivalneva ◽  
Valeria V. Strokova ◽  
P. Zhao
Keyword(s):  
Composite Material ◽  
Structure Formation ◽  
Urban Areas ◽  
Raw Materials ◽  
Raw Material ◽  
Cement Matrix ◽  
Cement Stone ◽  
Silica Substrate ◽  
Technogenic Raw Materials ◽  
Quantitative Assessments

The increasing urbanization of urban areas poses the challenge of the development of materials capable of self-cleaning from organic pollutants formed. Previous papers substantiated the possibility of the coating of titanium oxide as the main agent of the photocatalytic method of cleaning structural materials on silica raw materials in order to increase the degree of its distribution in the volume of cement matrix and, as a result, increase its efficiency.It is obvious that a silica substrate will affect the processes of structure formation during hardening of a cement matrix. During the research, the processes of phase transformations of cement stone modified with silica raw materials of natural and technogenic origin were studied. As a result, the influence of siliceous modifiers on the strength characteristics of the cement stone was determined, which allowed ranking them according to the degree of decrease in efficiency as follows: technogenic raw materials; natural raw materials of silicate composition; natural raw materials of aluminosilicate composition. Quantitative assessments of the degree of efficiency showed the irrationality of using aluminosilicate composition as a silica modifier of natural raw materials, which is explained by its low pozzolanic activity.

Evaluation of selected kaolins as raw materials for the Turkish cement and concrete industry

Clay Minerals ◽  
2007 ◽  
Vol 42 (2) ◽  
pp. 233-244 ◽  
Author(s):  
A. Aras ◽  
M. Albayrak ◽  
M. Arikan ◽  
K. Sobolev
Keyword(s):  
Construction Industry ◽  
Raw Materials ◽  
Paper Industry ◽  
Raw Material ◽  
Cement Clinker ◽  
Export Markets ◽  
Assessment And Evaluation ◽  
White Cement ◽  
Cement And Concrete ◽  
Clay Materials

AbstractTurkey has a long tradition (starting with prehistoric civilizations) and experience in exploring for raw clay materials and processing them into ceramic products. Many of these products, such as tiles and sanitary ware, are manufactured for domestic and export markets. Kaolin is one of the raw materials of major importance for the ceramic and paper industry, as well as for a number of auxiliary applications. There is ongoing interest in applying kaolin in the construction industry as a raw material in the production of white cement clinker and as an artificial pozzolanic additive for concrete (in the form of metakaolin). This report presents results related to search, assessment and evaluation of available resources for advanced cement and concrete additives.

Economic and Environmental Assessment of Redmud as Aggregate in Cement Clinker Production

2011 ◽  
Vol 90-93 ◽  
pp. 3254-3257
Author(s):  
Jing Min Hong ◽  
Ling Wang ◽  
Jing Lan Hong
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Cement Clinker ◽  
Coal Production ◽  
Dominant Contribution ◽  
Environment Impact ◽  
Cement Production ◽  
Material Efficiency ◽  
Transport Distance ◽  
Clinker Production

A cost combined life cycle assessment was carried out to estimate the economic and environmental impact of redmud as aggregate in cement production. Results showed that the raw materials, transport, electricity and coal had the highest contribution to overall cost, while coal production and direct emissions represented the dominant contribution to overall environment impact. Improving energy and raw material efficiency and minimizing raw materials transport distance are the efficient way to minimize overall environmental and economic impacts.

Properties of Self-Compacting Geopolymer Concrete

2014 ◽  
Vol 803 ◽  
pp. 99-109 ◽  
Author(s):  
Muhd Fadhil Nuruddin ◽  
Fareed Ahmed Memon
Keyword(s):  
Construction Industry ◽  
Fossil Fuels ◽  
Negative Impact ◽  
Raw Materials ◽  
Construction Material ◽  
Construction Materials ◽  
Cement Production ◽  
Cement Manufacture ◽  
The Moment ◽  
The Impact

Concrete has been used in the construction industry since long times. It is probably the most widely used construction material in the world, largely due to the abundance of the raw materials for cement manufacture, low relative cost and the versatility and adaptability of concrete in forming various structural shapes. Massive production of concrete and the associated substantial manufacture of cement have however been observed to have a very negative impact. One of the biggest issues of growing concern at the moment faced by concrete industries is the impact of cement production on the environment. The production of cement not only depletes significant amount of natural resources, but also liberates a considerable amount of carbon dioxide (CO2) and other greenhouse gases into the atmosphere as a result of decarbonation of limestone and the combustion of fossil fuels. In addition, cement is among the most energy intensive construction materials, after aluminium and steel [1].

scholarly journals Marble Quarry Waste Rock Piles and Evaluation of Their Reprocessing Potential for Lime and Cement Production (Marble Zone, Alentejo, Portugal)

2020 ◽  
Author(s):  
Paulo Sá Caetano ◽  
Tatiana Ribeiro ◽  
Carlos Costa ◽  
Daniel Vendas
Keyword(s):  
Methodological Approach ◽  
Waste Rock ◽  
Raw Material ◽  
Emission Spectrometry ◽  
Second Phase ◽  
Ornamental Stone ◽  
Waste Rock Piles ◽  
Stone Industry ◽  
South Portugal ◽  
Marble Waste

Approximately 80% to 90% of the total stone extracted by the ornamental stone industry in the Marble Zone (Alentejo, South Portugal) is wasted and discarded in the numerous quarry waste rock piles across the region. This enormous amount of marble waste, representing millions of tons of stone each year, mostly with an expected high chemical composition of calcium carbonate, has significant potential with regards to reprocessing and use in other industries. This study evaluates the potential viability of these marble waste piles for reprocessing. The methodological approach, designed in two phases, firstly selected potential sites and, secondly implemented a sampling plan to allow for the laboratory analyses. In the first phase, a total of 178 waste rock piles were identified, corresponding to an estimated 70mn tons of marble raw material. In the second phase, 30 selected piles were sampled and chemically analysed by calcimetry, XRF and flame emission spectrometry. The results show that 7 of the sampled piles present CaCO3 content above 97%, and another 14 show contents between 95% - 97%. This indicates that the waste could be reprocessed to produce lime and/or cement (clay materials are found in the surrounding schist outcrops in the region). There is also the potential for aggregate production for civil engineering works. Keywords: marble, waste reprocessing, lime production

Semiebonites

1949 ◽  
Vol 22 (1) ◽  
pp. 186-200
Author(s):  
Fritz S. Rostler
Keyword(s):  
Natural Rubber ◽  
Construction Industry ◽  
Large Volume ◽  
Raw Materials ◽  
Unsaturated Hydrocarbon ◽  
Raw Material ◽  
Phenolic Resins ◽  
Rubber Industry ◽  
Combined Use ◽  
Butadiene Styrene

Abstract To summarize the principal results of the present investigation, it was found that whereas natural rubber is a poor raw material for the manufacture of semiebonite, butadiene-styrene and butadiene-acrylonitrile rubbers are suitable raw materials, especially in combination with unsaturated hydrocarbon extenders of the Naftolen type. The superiority of GR-S to natural rubber in the form of semiebonite should be an interesting piece of information for every compounder conscientious about the importance of keeping up the use and the manufacture of GR-S. With natural rubber becoming more and more available, there exists, as we all know, the definite danger that GR-S will be pushed into the background. As a matter of fact, we are approaching the situation where the supply of rubber hydrocarbons, natural and synthetic, will exceed the demand by multiples if new uses for rubber in large volume are not found. The increased use of rubber products in the building and construction industry and in road surfacing might provide such an outlet for rubber. Semiebonite with good aging qualities might find many uses along these lines. It might lend itself to the manufacture of floor coverings, of waterproof wall insulation, etc. The possibilities of using semiebonites from GR-S for tire beads has been suggested in a previously published article, but no detailed study comparing various rubbers has been reported. The primary purpose of this report is to present these basic data, which can be used as starting points for compound development and to point out that we have in the semiebonite range a possibility of using GR-S to advantage. As to butadiene-acrylonitrile rubbers, with which, in distinction to GR-S, very useful semihard rubber products can be made with phenolic resins, the medium sulfur range opens the possibility of making semiebonites which are easier to process and cheaper than resin combinations. The use of plastics in the rubber industry was recently discussed and summarized by Winkelmann. The compounding of semiebonites with Naftolen-type products offers a means of regulating the plasticity of the uncured stock as well as the elongation of the vulcanizate. Aging and prevention of sulfur bloom appear also improved. In other words, it was found that the combined use of 15 to 20 parts of sulfur with 15 to 50 parts of a Naftolen-type hydrocarbon gives a satisfactory semiebonite with GR-S, as well as with Hycar, and both these rubbers appear superior to natural rubber in semiebonites.

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