Clinker


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clinker

the ash and partially fused residues from a coal-fired furnace or fire
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Clinker

 

the solid, sintered residue obtained after subjecting certain by-products of metallurgical production (for example, cakes, zinc-retort residues, or slags) and other zinc-containing products to the Waelz process.

The composition of the clinker depends on the composition of the original raw material. For example, clinker obtained by subjecting zinc cakes to the Waelz process contains 2.5–3 percent zinc, 1–3 percent lead, 1–3 percent copper, 10 g per ton gold, about 50 g per ton silver, 35–40 percent iron, and 20–30 percent carbon; the balance contains SiO2, CaO, and several other oxides. Clinker is an intermediate product of zinc manufacture. In copper or lead manufacture, copper, lead, and other valuable component elements are extracted by subsequent pyrometallurgical treatments. To separate copper concentrated in the magnetic clinker fraction, it is sometimes advisable to pulverize the clinker and to follow this step with magnetic separation.


Clinker

 

clay articles, usually brick-shaped, that are fired until they are completely sintered.

Clinker, made of highly plastic clays, is grouped with the stone-ceramic materials. It is used in paving highways, in facing hydraulic engineering structures, socles, and the facades of buildings, and in lining reservoirs in chemical manufacturing. The technology of clinkering is analogous to that of brick manufacture. A semifinished product of cement production that consists of a sintered mixture of limestone and clay (or slag) is also called clinker.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

clinker

[′kliŋ·kər]
(geology)
Burnt or vitrified stony material, as ejected by a volcano or formed in a furnace.
(materials)
An overburned brick.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

clinker

1. A partially fused product of a kiln, which is ground for use in cement; also called cement clinker.
2. A vitrified or partially vitrified residue of coal which has been burnt in a furnace; used as an aggregate in cinder block.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Average selling price (cement and clinker combined) declined 7.4 per cent to SR211 ($56.25 million) per tonne on higher clinker volumes, said the report.
But the firm, which suffered a pre-tax loss of Rs3.2bn in the first year of its operation in 2017-18, is facing problems in attracting cement and clinker exporters because of a very high royalty fee of $2.27 per tonne charged by Port Qasim authorities.
RCC has signed an agreement with Oman-based Ayoki Engineering LLC for the upgradation of the companys clinker cooler line 3 at Salalah.
The cement sector provides a strategic stock of cement and clinker to meet the needs of the local market during peak periods and also promotes access to foreign markets.
'The upgrade of clinker cooler is in line with Raysut Cement's strategic plan to install the latest production technology to reduce costs as well as to scale up its plants with state-of-the art equipment,' said Joey Ghose, group CEO of Raysut Cement.
At the same time, NEMA has warned Motrex's license will be revoked if it links the deaths to the clinker dust.
In fact, the cement grinding requires lower clinker proportions than was originally contracted (63 percent vs.
The subsidiary company, Pioneer Cement, produced at its UAE plant 1.324 million tonnes of clinker and 1.400 million tonnes of Cement during the year, against 1.364 million tonnes of clinker and 1.456 million tonnes of cement in 2015.
"Portland bulk cement and clinker trade prices in the Mediterranean Basin have slightly recovered from the general contraction faced during 2016," said Raluca Cercel, Consulting Analyst with the CW Group's European team.
"We have exported a sum of 6,620,958 tons of cement and clinker in the first four months of the current year," Secretary of Iran's Cement Industry Employers Guild Association Abdolreza Sheikhan said on Saturday.
As the in present time goes actively developing of saving technologies contribute to increasing use as raw materials for cement production of alternative raw materials [7-9], we investigated the obtaining sulfoferrite clinker based on technogenic materials.
This was met by a rise in sales, where clinker sales increased by 1.21 per cent and cement sales jumped 14.24 per cent.