Clinker

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clinker

the ash and partially fused residues from a coal-fired furnace or fire

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.

clinker

[′kliŋ·kər]
(geology)
Burnt or vitrified stony material, as ejected by a volcano or formed in a furnace.
(materials)
An overburned brick.

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.
References in periodicals archive ?
Thus in this clinker is present in a large amount is not metabolized anhydrite (d = 3,50; 2,85 [Angstrom]).
Sulfoferrite clinker based on man-made materials are also designed to receive sulfoferrite calcium and Belita was presented single phase (Fig.
Anhydrite in the clinker at the same temperature and aging present in much smaller amount in comparison with the clinker based on the pure components.
Based on the fact that the phase structure of clinker based technogenic materials differed sharply from the phase structure of clinker on the basis of pure components to study the laws of phase formation in the synthesis of SFC based on secondary raw materials made a series of isothermal sintering in the temperature range 600- 1500[degrees]C in steps of 50[degrees]C.
Until that time, the role of iron in clinker manufacture, hydration, and setting of portland cements was not well understood.
Early applications of x-ray crystallography using both single crystal and powder diffraction, as well as electron microscopy, were utilized to better understand the crystal chemistry of cement clinker compounds.
This calculation was widely adopted for production of clinker and development of clinker for special applications and is in use today, almost three-quarters of a century later, as part of the ASTM C 150 specification for hydraulic cements.
The optical microscope is a primary tool for the cement chemist for the study of clinker (Fig.
The purpose of this study was to conduct a petrographic characterization of the natural clinker produced by spontaneous combustion of coal beds Cerrejon Formation and to apply the Rietveld method to the quantitative phase analysis of this geological material.
Petrographic analysis of different samples of natural clinker were carried out to establish their textural and structural features as well as their mineralogy, using the following analytical techniques: transmitted light microscopy (Nikon triocular microscope, model Labophot2-POL) of the School of Geology and image analyzer Leica of the School of Metallurgical Engineering and Materials Science at the Universidad Industrial de Santander, and scanning electron microscope ZEISS EVO50 of the Research Center of Applied Sciences at the University of Wolverhampton (analytical conditions: EHT = 20.
The preparation and assembly of natural clinker samples for X-ray diffraction (XRD) was carried out at the Laboratory of Structural Chemistry of the School of Chemistry at the Universidad Industrial de Santander.
One of the most remarkable features in the areas of Cerrejon coal mining complex is the occurrence of natural clinker as an indicator of ancient fires produced by spontaneous combustion of coal seams (Candela & Quintero, 2004; Quintero et al.