What are the requirements of a good slag Answers

What are the requirements of a good slag? Answer. Wiki User March 09, 2010 1:13PM. Slag is the detritus or remains of some industrial processes for which no use has been found. It is usually

Steel Slag User Guideline Granular Base User

A good groundwater drainage system is recommended when steel slag aggregate is used to allow free drainage and to prevent ponding within or against the steel slag. Quality Control The same field test procedures used for conventional aggregate are recommended for granular base applications when using steel slag.

Slag-What is it Good for? USGS.gov

Jun 29, 2017· But some recent research here at USGS might change slag’s poor public image. It turns out that, although slag is most known for being what’s left when metals have been removed, slag itself might be good at removing some negative chemicals from the environment.

Slag Cement Questions

Slag cement improves many of the strength and durability properties of hardened concrete. Slag cement is a hydraulic binder that, like portland cement, reacts with water to form cementitious material (calcium-silicate hydrate or CSH).

LADLE REFINING AND SLAG CONDITIONING

somewhat conflicting requirements. A good slag for the metallurgical practice should have a high fluidity (low viscosity), whereas, a good slag in terms of refractory wear should have a low fluidity (high viscosity) to insure minimum penetration and reaction, and good coating formation.

Ground Granulated Blast Furnace Slag an overview

These guidelines on ground granulated blast-furnace slag substitution rates are intended to provide a starting point for designers with little or no experience in the use of cement and concrete containing ground granulated blast-furnace slag. If local data shows good performance at greater percentages, this information can be used in lieu of

Blast Furnace Slag User Guideline Granular Base User

Gradation: Blast furnace slag should be crushed and screened to produce a material that satisfies the grading requirements of granular base and subbase specifications, such as AASHTO M147. Compacted Density : The compacted density varies with size and grading of the slag, method of measuring, and bulk specific gravity of the slag.

5 Aggregate Specifications and Requirements

asphalt is needed to make a good mix. However, some aggregates, such as blast furnace slag, may be used despite their high absorptive capacity because of other characteristics that make them desirable, including skid requirements of AS aggregates in accordance with Section 904.03 (a).

5 Aggregate Specifications and Requirements

asphalt is needed to make a good mix. However, some aggregates, such as blast furnace slag, may be used despite their high absorptive capacity because of other characteristics that make them desirable, including skid requirements of AS aggregates in accordance with Section 904.03 (a).

Slag and its Role in Blast Furnace Ironmaking IspatGuru

Aug 07, 2015· The slag is to have capacity for the removal of the alkalis, It is to fulfil the requirements for the desulphurisation. The composition of the primary slag must be uniform. Slag formation is to be confined to a limited height of the blast furnace and the slag must be stable. The slag is to provide good permeability in the zone of slag formation.

Standard Specification for Steel Slag Aggregates for

Abstract. This specification covers crushed steel slag coarse and fine aggregates suitable for use in bituminous paving mixtures. The coarse and fine aggregates shall consist of hard, tough, durable pieces of steel slag, and shall be processed, as necessary, by crushing or screening, or both, and magnetic separation for the removal of metallics.

Slag As A Fertilizer ChestofBooks

Slag As A Fertilizer. '•The slag from the Thomas-Gilchrist process for making steel has long been supposed to have valuable properties as a manure. In the Bessemer converter, there is a lining of lime which, in the process of manufacturing the steel, takes up a large percentage of phosphorus, in the form of phosphoric acid.

slag concrete specifications

Slag cement is a raw material that is used in a wide variety of commercial and architec- tural concrete construction applications. This information sheet is intended to provide guidance to specifiers in the absence of slag cement specifications, or for the addition of slag cement to an existing specification.

Blast Furnace Slag Cement an overview ScienceDirect Topics

The technical requirements for pozzolana cement are the same to those of blast-furnace slag cement. and activated ground granulated blast furnace slag cement is a good binder when the aim of stabilization is high strength (in the range of 1000–3000 kPa). Used as a soil stabilizer, slag

Some smelter slags represent a significant environmental

Some smelter slags represent a significant environmental hazard. This might not be such a good idea, however, since slag produced in refining copper, zinc, cadmium and other base metals can

Slag Wikipedia

Slag is the glass-like by-product left over after a desired metal has been separated (i.e., smelted) from its raw ore. Slag is usually a mixture of metal oxides and silicon dioxide. However, slags can contain metal sulfides and elemental metals.

ASTM C989 / C989M 18a Standard Specification for Slag

The slag shall contain no additions and shall conform to the sulfide sulfur and sulfate stone composition requirement. Physical properties of the slag shall be in accordance with the requirements for fineness as determined by air permeability and air content, slag

4 Aggregate Specifications and Requirements

requirements for aggregate: quality and gradation. needed to make a good mix. However, some aggregates, such as blast furnace slag, may be used despite their high absorptive capacity because of other characteristics that make them desirable, including skid resistance, economics,

How to Make Cement From Blast-Furnace Slag

It has long been established by law and custom in most countries that a cement made from blast-furnace slag and limestone so as to comply with standard requirements of method of manufacture, stone composition, fineness, strength, soundness, specific gravity, &c., is legitimately a Portland cement, and may be sold as such.

The SLAG-REC project for an innovative direct dry

A good example for this is the term "slag", which is still popularly equated with waste. Waste products from the iron and steel industry have been sometimes successfully used in In addition to size requirements which can be complied with by crushing, milling and sieving,

Protecting Workers from the Hazards of Abrasive Blasting

• Copper slag, nickel slag, and glass (crushed or beads) also have the potential to cause including the use of good work and personal hygiene practices, can also reduce exposure. It does not impose any new compliance requirements. For a comprehensive list of compliance

A Review of Slag Splashing Request PDF

Good slag properties are obtained with a FeO content of ca. 13 % and MgO should be supersaturated (>8 % MgO) to ensure that the slag is MgO-saturated rather than CaO-saturated so that high-melting

How to Make Cement From Blast-Furnace Slag

It has long been established by law and custom in most countries that a cement made from blast-furnace slag and limestone so as to comply with standard requirements of method of manufacture, stone composition, fineness, strength, soundness, specific gravity, &c., is legitimately a Portland cement, and may be sold as such.

The SLAG-REC project for an innovative direct dry

A good example for this is the term "slag", which is still popularly equated with waste. Waste products from the iron and steel industry have been sometimes successfully used in In addition to size requirements which can be complied with by crushing, milling and sieving,

A Review of Slag Splashing Request PDF

Good slag properties are obtained with a FeO content of ca. 13 % and MgO should be supersaturated (>8 % MgO) to ensure that the slag is MgO-saturated rather than CaO-saturated so that high-melting

gravel vs. slag driveways which one is better? Yahoo Answers

Mar 27, 2009· I agree with yesiam,for her reason, and that slag actually is supposed to make the ground more fertile,because of it's micro nutrient content which actually help weeds grow under the slag.I am sure you want to avoid that.I am still not too sure about the safety to ground water either.

304 Aggregate Base dot.state.oh.us

Granulated Slag Used for 304. If granulated slag is selected for use, the material must meet the requirements of 703.08. Open Hearth Slag Used as 304. If open hearth slag is selected for use, ensure that the material meets the gradation and physical requirements of 703.17 and the requirements of 703.14 which include: 1. Deleterious Substances. 2.

General requirements. 1910.252 Occupational Safety and

Guards. If the object to be welded or cut cannot be moved and if all the fire hazards cannot be removed, then guards shall be used to confine the heat, sparks, and slag, and to protect the immovable fire hazards. 1910.252(a)(1)(iii)Restrictions.

Protecting Workers from the Hazards of Abrasive Blasting

• Copper slag, nickel slag, and glass (crushed or beads) also have the potential to cause including the use of good work and personal hygiene practices, can also reduce exposure. It does not impose any new compliance requirements. For a comprehensive list of compliance

A Legal Checklist for Doing Business in China

Dan is a founder of Harris Bricken, an international law firm with lawyers in Los Angeles, Portland, San Francisco, Seattle, China and Spain. He primarily represents companies doing business in emerging market countries, having spent years building and maintaining a global, professional network.

Virginia’s Mass Concrete Experiences: Requirements for a

A partnership of the Virginia Department of Transportation and the University of Virginia since 1948 Virginia’s Mass Concrete Experiences: Requirements for a Good Specification Celik Ozyildirim, PhD, PE VTRC, VDOT

Personal Protective Equipment (PPE) for Welding and Cutting

requirements of ASTM F2412 and ASTM F2413 (or the older ANSI Z41 which has been withdrawn). Look for a compliance mark inside your boot. Wear leather, steel-toed, high-topped boots in good condition. They will help protect your feet and ankles from injury. In heavy spark or slag areas, use fire-resistant boot protectors or leather

Section 800 Coarse Aggregate

slag Sound, durable particles with uniform density and quality, or other slags that have a good service record. Dry slag shall weigh at least 70 lb/ft³ (1120 kg/m³) compacted and shall contain less than 30% glassy particles by weight. Do not use slag as aggregate for Portland cement concrete.

Slag Basicity: What Does It Mean? Request PDF

The foaming index of the CaO-SiO2-MO (MO = MgO, FeO, or Al2O3) ternary slag system with a fixed CaO/SiO2 ratio is measured to understand the effect of the ionic structure.

MINIMUM REQUIREMENTS FOR WASTE DISPOSAL BY LANDFILL

The requirements for pretreatment and disposal are approximately set in accordance with the waste classification. Hazardous waste prevention and minimisation are briefly addressed, because of their importance, as is handling, transportation and storage. Document 2, Minimum Requirements for Waste Disposal by Landfill, addresses landfill

Weld Quality Testing: Visual, Physical & NDT Weld Guru

Dec 12, 2019· Slag inclusions are elongated or globular pockets of metallic oxides and other solids compounds. They produce porosity in the weld metal. (NDT) weld quality testing process where a weld is examined with the eye to determine surface discontinuities. It is the most common method of weld quality testing. Good eyesight required or eyesight

Personal Protective Equipment (PPE) for Welding and Cutting

requirements of ASTM F2412 and ASTM F2413 (or the older ANSI Z41 which has been withdrawn). Look for a compliance mark inside your boot. Wear leather, steel-toed, high-topped boots in good condition. They will help protect your feet and ankles from injury. In heavy spark or slag areas, use fire-resistant boot protectors or leather

Section 800 Coarse Aggregate

slag Sound, durable particles with uniform density and quality, or other slags that have a good service record. Dry slag shall weigh at least 70 lb/ft³ (1120 kg/m³) compacted and shall contain less than 30% glassy particles by weight. Do not use slag as aggregate for Portland cement concrete.

Slag Basicity: What Does It Mean? Request PDF

The foaming index of the CaO-SiO2-MO (MO = MgO, FeO, or Al2O3) ternary slag system with a fixed CaO/SiO2 ratio is measured to understand the effect of the ionic structure.

Weld Quality Testing: Visual, Physical & NDT Weld Guru

Dec 12, 2019· Slag inclusions are elongated or globular pockets of metallic oxides and other solids compounds. They produce porosity in the weld metal. (NDT) weld quality testing process where a weld is examined with the eye to determine surface discontinuities. It is the most common method of weld quality testing. Good eyesight required or eyesight

10. Slags Alternative materials in road construction :A

In the case of blast-furnace slag the stone requirements for its use in construction are given in BS 1047: 1983 'Air-cooled blast-furnace slag for use in construction'. they are an obvious supply of what might be expected by analogy with blast-furnace slag to be good road making materials. Uses in road construction Little is known of the

Importing into the United States A Guide for Commercial

importing process and import requirements. We have made every effort to include essential requirements, but it is not possible for a book this size to cover all import laws and regulations. Also, this publication does not supersede or modify any provision of those laws and regulations. Legislative and administrative changes are always under

Should Minimum Cementitious Contents for Concrete Be

Minimum cementitious contents are commonly specified in project 40% slag cement or 25% fly ash. Concrete performance was evaluated On the basis of these results the value of maintaining minimum cementitious content requirements in project specifications is questioned. In the United States many state highway agencies specify a mini-

MF 185-5 BF Slag as an Agricultural Liming Material

NATIONAL SLAG ASSOCIATION nationalslagassoc.org NATIONAL SLAG MF 185-5 ASSOCIATION BLAST-FURNACE SLAG AS AN AGRICULTURAL LIMING MATERIAL and SOURCE OF MINOR PLANT NUTRIENTS he benefit to agricultural crop production and soil fertility of having proper levels of alkalinity has been well-established.

Laboratory Testing & General Mineral Processing Engineering

The choice of the above point on the ternary diagram has been chosen in order to achieve a maximum uptake of Fe2O3, while ensuring a slag melting point around 200C below that of dore (a factor known from practice to be necessary to provide a good slag), and also to maintain a maximum SiO2 content (in order to limit basic attack on the crucible

Blast Furnace Cast House and its Operation IspatGuru

Jun 06, 2014· Only those sections of tubing which comply with minimum safety requirements should be recovered for re-use. Cast house refractory consumables For the blast furnace tap holes, where iron and slag are tapped periodically, ready for use taphole mixes (also called taphole clay) are used to plug the hole at the end of a cast. These heat setting

What makes a good asphalt driveway? Asphalt magazine

• good construction practices; and • timely maintenance. Don Siler, asphalt technology specialist for Marathon Petroleum Company (MPC), concurs. “Good materials, good practices, good workmanship and good site preparation make a good driveway,” he says. “Driveways must be properly designed and constructed,” he adds.

Preheating, Interpass and Post-Weld Heat Treatment

PREHEATING, INTERPASS AND POST-WELD HEAT TREATMENT REQUIREMENTS FOR WELDING LOW ALLOY STEELS 1.0 INTRODUCTION 1.1 Issue: 1-5 In fusion welding processes (see 2.1), the reason often given to explain the need for preheating, controlling the interpass temperature (in multipass welds), and post-weld heat treatment (PWHT) is to reduce the risk of cold

Welding Consumables Part 1 TWI

Any slag should be readily removable and preferably self-detaching. It should not produce large amounts of fume and any that it does should not be harmful to the welder. These requirements have resulted in a multitude of different consumables, many being apparently identical, and this can make filler metal selection a difficult and confusing task.

slang How offensive is it to call someone a "slag" in

Having drawn that distinction: mention of the word slag while it's clearly to be avoided when on one's best behaviour is unlikely to cause much offence; that would put it on a roughly similar level to slut or perhaps skank. However, using the word slag to describe someone would be a good way to