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Register a new userStudy to use slag of hadeed Hamaa in cement industry
دراسة امكانية استخدام نفايات خبث معمل حديد حماه في صناعة الاسمنت
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في بحثنا هذا سنعمل على استخدام الخبث الناتج عن معمل حديد حماه و-هو نفاية صناعية تحتاج للمعالجة- كمادة مضافة للكلنكر للحصول على الاسمنت و تجدر الإشارة إلى أن هذا الحل المقدم في استخدام نفايات خبث الحديد ليس بالجديد تاريخيا, حيث يتم استخدام خبث الأفران العالية الناتج عن عملية استخلاص الحديد من فلزاته, و إنما الجديد في استخدام معمل حديد حماة لأفران القوس الكهربائي لصهر الخردة في تصنيع حديد البيلت و بالتالي إنتاج خبث مختلف في المواصفات نوعا ما عن خبث الافران العالية ,و من هنا تأتي أهمية البحث بتسليط الضوء على فكرة جديدة تركز على إيجاد طرق مناسبة بيئيا"للتخلص من هذا النوع من النفايات الصناعية بإعادة استخدامها الأمر الذي يسهم في حماية البيئة.
This research study the possibility using slag of hadeed Hamaa in cement industry as an additive to klinker in certain percentage instead of pozzolana which obtained from natural quarry in Suaedaa city and check the produced cement if it still have the stander of Portland cement or move to slag cement standard., this slag became a big problem due to the huge square occupied for disposal , and although the problems happened around the agricultural land escape .
References used
Duda, H, Walter. 1985. Cement Data Book; International Process Engineering in the Cement Industry HGUHGy. 3rdhand bon. Germany
DAVIS.J,1998,metals hand book desk edition ASM international
AGRAWAL.A,SAHU,K,K , pandeyB,D.2004, solid waste management in non ferrous industry in India , conservation and recycling
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The importance of these scientific research because it is the first
applicated study in Kasab area ,and becomes from the big needing
of materials , which interior in cement industry .So the attention
had directed toward finding alternative locatio
ns for primacy ore
addition to process reconstruction the ancient mine, as a result of
these scientific research we had made a stratigraphical ,geological,
geochemical detailed studies on samples had taken from the Kasab
area, which show that calc rocks, and marl rocks in these area are
duplicated to the standard specifications,which request for
Portland cement industry . where we had definite the new five
reservoirs in the area. From the geochemical analyzes of studded
samples, and geochemical diagram's ,We can say that limestone
samples riches in clay materials need to correct before to use in
cement industry.
This research was done to improve the local bitumen specifications 60-70 (Banias
refinery output) using Cement Bypass DUST(CBPD) so that it becomes more resistant to
high temperatures (Short- Term- Aging), in addition to reduce the harmful waste ma
terials.
The cement bypass was supplied by Tartous Cement Company and added to
bitumen with different percentages namely, 12%, 14%, 16% and 18% (by the weight of
bitumen). some experiments were held to determine the properties of modified and
unmodified bitumen (Penetration )25, 15, 4(∁°- Ductility- Softening point), then We
returned previous experiences after (Loss- on- heating test) and exposure to (Short- Term-
Aging) on the modified and unmodified bitumen, and the results were within specification
limits, were Compatible with previous reference studies and these additions have to
improve the resistance of bitumen to high temperatures. The optimum cement Bypass Dust
ratio was found to be 14% of the weight used bitumen.
The aim of this laboratory study was to evaluate the
internal fit of lithium disilicate glass ceramic laminate veneers
fabricating using heat-pressing technique and cemented using two
types of adhesive resin cement.
The study aims to identify the effect of Physical and moral
incentives which provided to employees in the Cement's factory in
Tartous on their satisfaction on their work, and to shed some light
on the incentive systems applied to employees in that sector.
The purpose of this research is to study the impact of the financing decision (FD) on
profitability in the textile industry companies in the Syrian coast during the period (2000-
2016), which are three companies not listed on the Damascus Stock Exc
hange. The
financing decision was measured in terms of ratio of total debt to total assets (TD),
Profitability was measured by return on assets (ROA), return on equity (ROE) and return
on capital (ROC). A series of annual financial statements of the three companies were used
during the period reviewed (Panel Data). In order to estimate the models of the study, the
unit root test was applied to test the stability of the studied variables. After confirming their
stability, the regression models were estimated using the normal lower squares method.
The study reached several results, the most important of which is that the debt has a
negative impact on profitability in different ratios used to measure both debt and
profitability.
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