Preface

The coordinated development of resources, environment, energy and population is a major social problem in today's world. A lot of metallurgical solid wastes have not been timely and effectively recycled, resulting in serious problems of environmental pollution and waste of resources. As a result, large scale comprehensive utilization technologies have been initiated, including slag dry granulation technology, steel slag cement technology, slag wool technology and slag waste heat recovery technology, etc. To help support the effort, various governmental and non-governmental agencies established funding for metallurgical solid waste comprehensive utilization technology. The comprehensive utilization of metallurgical solid waste has attracted worldwide attention. It is an effective way to improve the utilization efficiency of resources and the added value of products by using the scientific metallurgical solid waste recycling methods.

This book is divided into five chapters. The first chapter is written by Prof. Striga Julius, et al. This chapter focuses on the antimicrobial efficiency of blast furnace slags for applications in building materials and products. The second chapter is written by Dr. Brandaleze Elena et al. In this chapter, the treatment and recycling techniques of BOF and EAF slags are described. The BOF slags are applied in buildup, foaming or slag splashing to prolong refractory lining life. Also EAF slags are commonly used to avoid refractory wear and reduce energy consumption. The BOF and EAF slag are also used in cement production and building materials. The third chapter is written by Dr. Deus Angélica et al. This chapter aims to emphasize the application of slags in soil, and the effect of slags on nutrient content, such as phosphorus, calcium and magnesium, some micronutrients and silicon. In addition, the utilization of these residues in tropical soils is also discussed. The fourth chapter is written by Dr. Long Hu et al. In this chapter, the physical-chemical properties and mineralogical phases of converter sludge are characterized, and different recycling technologies are introduced. The metalized pellet producing process is mentioned, whereby green pellets made from iron-bearing sludge are dried and preheated firstly, and then reduced at high temperature in a rotary kiln or a rotary hearth furnace (RHF) to obtain direct reduced iron (DRI). The fifth chapter is written by Prof. Dmitriev Andrey et al. In this chapter, the red mud of the bauxite process is used to produce iron-ore sinter and pellets, the effect of red mud contents on metallurgical properties of sinter and pellets is investigated, and the main technical and economic indicators of blast furnace smelting are also analyzed.

This book intends to provide the reader with a comprehensive overview of the metallurgical solid wastes comprehensive utilization technology. The comprehensive utilization methods of metallurgical solid wastes are emphatically described, such as blast furnace slag, steel slag, converter sludge and red mud.

During the writing process, the book was helped in many ways. Thanks to Prof. Striga Julius, Prof. Dmitriev Andrey, Dr. Brandaleze Elena, Dr. Deus Angelica,

Dr. Long Hu and others for their hard work and support. Thanks also to Ms. Dolores Kuzelj, Author Service Manager, for her help and guidance, and thanks to colleagues at Anhui University of Technology for their strong support.

> **Yingyi Zhang** Anhui University of Technology, Anhui Sheng, China

> > **1**

Section 1

Review of Comprehensive

Utilization of

Metallurgical Solid Waste

## Section 1
