reductant


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reductant

[ri′dək·tənt]
(metallurgy)
Coal or other reducing materials introduced in a smelting process to remove oxygen from ores or concentrates.
References in periodicals archive ?
Being able to use lower cost raw material represents significant potential cost savings, however another significant outcome from this is that, as a result, the PUREVAP process should only require 4.5 MT of raw material (lower purity silicon dioxide and cheaper reductant) to produce 1 MT of metallurgical grade silicon metal.
Numerous commercial markets exist for the high value, high-fixed-carbon char ranging from a smokeless fuel, to a carbon reductant in the mini-mill electric arc furnaces, to a carbon absorbent for waste water and chemical treatment and recovery, to an activated carbon application and/or by further processing into coke briquettes for the foundry and steel industry.
During the phase of reductant consumption in the cc LNT there is still a NO slip into the uf LNT.
The cyclic voltammogram of AgNPs sample prepared using watermelon rind extract as the reductant shows a distinct oxidation peak at +291 mV (as shown in Figure 8).
N[H.sub.3] is thought to be used as reductant directly since N[H.sub.3] aqueous solution can decompose into [H.sub.2] and [N.sub.2] by photocatalyst [37].
Ascorbate is the principal reductant of chromium(VI) in rat lung ultrafiltrates and cytosols, and mediates chromium-DNA binding in vitro.
Some high-end models address this problem through a selective catalytic converter that reacts engine emissions with an on-board supply of a gaseous reductant such as anhydrous ammonia, aqueous ammonia or urea.
The first type is thermal initiation where free radicals are generated by pyrolytic cleavage of covalent bond, whereas the second type is redox initiation where free radicals are generated by redox reaction between an oxidant and a reductant. Thermal initiation requires higher temperature (above 70[degrees]C) whereas redox initiation can be done at a low range of temperature (0-50[degrees]C).
"The advantage of natural gas is not just the economics of its availability, but that using hydrogen as a reductant lowers C[O.sub.2] emissions, " Seetharaman says.
1), that led to increase in soil Eh (Xu et al., 2013b) and decreased in soil reductant contents, less Zn will be precipitated or co-precipitated.
In DC smelting, the feed material is gravity-fed into the furnace, together with the reductant, via charging tubes.
Widely deployed in Class 8 trucks to meet sharply reduced Environmental Protection Agency emissions and particulate matter thresholds for on-highway diesel engines beginning in 2010, SCR is an advanced active emissions control technology system that injects a liquid reductant agent through a special catalyst into the exhaust stream of a diesel engine.