SIST ISO 15968:2016 PDF

Name: SIST ISO 15968:2016 — Direct reduced iron - Determination of apparent density and water absorption of hot briquetted iron (HBI)
SKU: SIST ISO 15968:2016
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Direct reduced iron - Determination of apparent density and water absorption of hot briquetted iron (HBI)

Название (английский):

SIST ISO 15968:2016

Direct reduced iron - Determination of apparent density and water absorption of hot briquetted iron (HBI)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 12
Дата публикации:: 29 марта 2016 г.
ICS:: 73.060.10
Технический комитет:: I12 - Imaginarni 12 Imaginarni TC za ISO področje - vzdrževani privzeti ISO standardi

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Описание (английский):

ISO 15968:2016 specifies a method of determining the apparent density and water absorption of direct reduced iron by immersion in water. ISO 15968:2016 is applicable to hot briquetted iron (HBI).

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 15968:2016 specifies a standardized immersion test to determine the apparent density and water absorption of direct reduced iron in the form of hot briquetted iron (HBI). The method is intended for use in production quality control, contractual verification and research, and its apparent density result can help demonstrate compliance with the IMO Code of Safe Practice for Solid Bulk Cargoes.

Key topics and technical requirements

Scope: Applies specifically to HBI; method is based on immersion in water.

Sampling & preparation:

Follow ISO 10835 for sampling and sample preparation.
Obtain a test sample sufficient for at least 100 briquettes.
Sieve sample on a 40 mm test sieve to discard −40 mm material.
Prepare at least 4 test portions, each with ≥6 briquettes.
Oven-dry test portions to constant mass at 105 °C ± 5 °C and cool to room temperature.

Apparatus:

Oven, two water vessels, suspension device, wire basket or suspension wire, test sieve (ISO 3310 compliant), thermometer and balances.
Balance accuracy: 0.1 g for immersed weighing; 1 g for dry mass measurements.
Water: free of impurities (use distilled/deionized or freshly boiled/filtered if in doubt).

Procedure:

Weigh dried briquettes in air (m1), soak in water at 22 °C ± 5 °C until bubbling ceases (up to 60 min), surface-dry and weigh in air (m2).
Determine submerged mass either by the wire basket (entire test portion) or wire suspension (individual briquettes).

Calculations:

Apparent density (ρa) is calculated from the measured masses in air and submerged readings and the water density at test temperature.
Water absorption (a) is calculated as the percentage increase in mass: (m2 − m1)/m1 × 100%, reported to 0.1%.
Record density results to two decimal places; repeatability r = 0.2 g/cm3 for acceptance.

Reporting & verification:

Test report must include reference to ISO 15968, sample ID, lab details, dates, test conditions (drying time, immersion period, water type/temperature), and results.
Regular apparatus verification (sieves, balances, suspension device, thermometer) is recommended.

Applications - who uses ISO 15968:2016

Steel producers and direct reduction plants performing HBI quality control

Laboratory testing services and QA/QC teams

Buyers and sellers using contractual specifications for HBI shipments

Regulatory bodies and maritime safety auditors referencing IMO density requirements

Research organizations studying direct reduced iron properties

Related standards

ISO 10835 - Direct reduced iron and hot briquetted iron: sampling and sample preparation

ISO 3310-1 / ISO 3310-2 - Test sieves (metal wire cloth / perforated plate)

ISO 11323 - Iron ore and direct reduced iron vocabulary

Keywords: ISO 15968:2016, hot briquetted iron, HBI, apparent density, water absorption, immersion test, direct reduced iron, quality control, IMO.

SIST ISO 15968:2016 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications - who uses ISO 15968:2016

Related standards

Технические детали

ISO 15968:2016

Direct reduced iron — Determination of apparent density and water absorption of hot briquetted iron (HBI)

ISO 10835:1995

Direct reduced iron — Sampling and sample preparation — Manual methods for reduced pellets and lump ores

BS ISO 3310-1:2016

Test sieves. Technical requirements and testing. Test sieves of metal wire cloth.

SIST ISO 3310-2:2015

Test sieves - Technical requirements and testing - Part 2: Test sieves of perforated metal plate

BS ISO 11323:2010

Iron ore and direct reduced iron. Vocabulary.