Direct reduced iron and hot briquetted iron. Sampling and sample preparation.
Direct reduced iron and hot briquetted iron. Sampling and sample preparation.
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1 Scope This International Standard gives
a) the underlying theory,
b) the basic principles for sampling and preparation of samples , and
c) the basic requirements for the design, installation and operation of sampling systems,
for mechanical sampling, manual sampling and preparation of samples taken from a lot under transfer, to determine the chemical composition, moisture content and physical properties of the lot . The methods specified in this International Standard are applicable to both the loading and discharging of direct reduced iron (DRI) and hot briquetted iron (HBI), by means of belt conveyors and other ore handling equipment to which a mechanical sampler may be installed or where stopped-belt sampling may safely be conducted. In this International Standard, DRI includes both reduced pellets and reduced lump ores.
CAUTION Direct reduced iron (DRI) and, in some cases, hot briquetted iron (HBI), for example, with low density or high fines content, may react with water and air to produce hydrogen and heat. The heat produced may cause ignition. Therefore, due consideration shall be given to the safety of operators by respecting applicable regulations or international codes.
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