{"id":15487,"date":"2025-09-19T02:12:31","date_gmt":"2025-09-19T02:12:31","guid":{"rendered":"https:\/\/jda.jhy.mybluehost.me\/?p=15487"},"modified":"2026-03-11T02:51:46","modified_gmt":"2026-03-11T02:51:46","slug":"types-and-uses-of-steel-plant-solid-waste-unlocking-value-with-cold-briquetting","status":"publish","type":"post","link":"https:\/\/www.jianjiebinder.com\/zh\/types-and-uses-of-steel-plant-solid-waste-unlocking-value-with-cold-briquetting\/","title":{"rendered":"\u94a2\u94c1\u5382\u56fa\u4f53\u5e9f\u5f03\u7269\u7684\u79cd\u7c7b\u548c\u7528\u9014\uff1a\u5229\u7528\u51b7\u538b\u5757\u6280\u672f\u91ca\u653e\u5176\u4ef7\u503c"},"content":{"rendered":"

From dust and sludge to slag and scale, steel plants generate millions of tons of solid waste each year. While these materials are often treated as disposal challenges, they actually contain valuable iron and other metallic components. Efficient recycling of steel waste<\/strong> is not only a step toward environmental sustainability, but also a way to reduce raw material costs and improve overall production efficiency.<\/p>\n\n\n\n

\"stocked<\/figure>\n\n\n\n

stocked and piled steel waste in plants<\/p>\n\n\n\n

One of the most practical and cost-effective ways to recycle steel waste is through\u00a0\u51b7\u538b\u5757<\/a>\u2014a low-energy process that compresses fine, dusty materials into solid briquettes. In this article, we’ll walk you through the types of steel waste, how cold briquetting works, and how Jianjie Binder helps solve common briquetting problems.<\/p>\n\n\n\n

What Are Steel Plant Solid Waste and Dust?<\/strong><\/h2>\n\n\n\n

In the ironmaking and steelmaking processes, large volumes of by-products are generated as a result of physical separation, chemical reactions, and gas cleaning operations. These by-products are referred to as steel solid waste, and they include dust, sludge, scale, and slag. Though often regarded as “waste”, these materials still contain a significant amount of iron, carbon, and other recyclable metals.<\/p>\n\n\n\n

Steel Plant Dust<\/a><\/strong><\/h3>\n\n\n\n

Dust is one of the most common and problematic forms of waste in steel production. It is in the form of powder and fine particles. It is typically collected using bag filters or electrostatic precipitators. It is very fine, dry or semi-wet, and often contains iron oxides, zinc, calcium oxide (CaO), lead, and carbon. Because of its fine particle size and chemical activity, it is difficult to handle, store, or reuse directly. <\/p>\n\n\n\n

Other Forms of Solid Waste<\/strong><\/h3>\n\n\n\n
\"Sludge<\/figure>\n\n\n\n

Sludge + Dust Briquettes<\/p>\n\n\n\n

\u6c61\u6ce5<\/a>:<\/strong>\u00a0Wet and sticky material formed during gas scrubbing and wastewater treatment. It contains moisture, iron, and sometimes heavy metals.<\/p>\n\n\n\n

\"Mill<\/figure>\n\n\n\n

Mill Scale + Dust Briquettes<\/p>\n\n\n\n

Mill Scale<\/a>:<\/strong>\u00a0Iron-rich flakes that form on the surface of steel during hot rolling and are collected from cooling water systems.<\/p>\n\n\n\n

\"steel<\/figure>\n\n\n\n

Steel Slag Briquettes<\/p>\n\n\n\n

Steel Slag:<\/a><\/strong>\u00a0A coarser, granular material produced during the separation of impurities in molten steel. Though bulky, it can be reused in construction or as furnace additives after processing.<\/p>\n\n\n\n

Sources and Classification of Steel Solid Waste<\/p>\n\n\n\n

Steelmaking involves several production stages\u2014ironmaking, steelmaking, rolling, and material handling. Each of which generates different kinds of waste. These waste materials vary in particle size, composition, moisture content, and chemical behavior. Understanding these differences is key to selecting the right recycling method.<\/p>\n\n\n\n

Production System<\/strong><\/strong><\/td>Process Unit<\/strong><\/strong><\/td>Waste Type<\/strong><\/strong><\/td>Specific Waste Items<\/strong><\/strong><\/td><\/tr>
Mining & Beneficiation<\/td>Raw Materials<\/td>Mineral Powders<\/td>\u2022 Iron Ore Fines
\u2022 Concentrates
\u2022 Fluorspar Powder
\u2022 Chromite Powder
\u2022 Si-Mn Powder<\/strong><\/td><\/tr>
Pre-Iron System<\/td>Sintering\/Pelletizing<\/td>Dust & Sludge<\/td>\u2022 Sinter Return Fines
\u2022 BF Gas Dust
\u2022 BF Gas Sludge
\u2022 Steel Grit<\/strong><\/td><\/tr>
Ironmaking System<\/td>Blast Furnace (BF)<\/td>Dust Collection<\/td>\u2022 BF Dry Dust Collection
\u2022 BF Tapping Field Dust
\u2022 Hot Metal Ladle Station Dust
\u2022 BF Material Handling Dust<\/strong><\/td><\/tr>
Steelmaking System<\/td>Converter<\/td>Secondary Dust<\/td>\u2022 Converter Mixer Dust
\u2022 Underground Silo Dust
\u2022 Slag
\u2022 OG Sludge<\/strong><\/td><\/tr>
Electric Arc Furnace (EAF)<\/td>Mechanized Dust<\/td>\u2022 EAF Dust
\u2022 Slag<\/strong><\/td><\/tr>
Refining Furnace<\/td>LF Refining Dust<\/td>\u2022 Refining Dust
\u2022 Slag<\/strong><\/td><\/tr>
Rolling System<\/td>Rolling Mill<\/td>Scale<\/td>\u2022 Iron Oxide Scale<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

These materials generated in steel making are often fine, sticky, or chemically active\u2014making them hard to handle or reuse directly. Cold briquetting offers a practical way to turn them into value-added resources.<\/p>\n\n\n\n

Components in Steel Mill Sold Waste<\/strong><\/h2>\n\n\n\n
\u9664\u5c18\u7070\/\u94a2\u7c89\u5c18\u4e2d\u7684\u6210\u5206\uff08%\uff09<\/strong><\/strong><\/td><\/tr>
\u7070\u5c18\u7c7b\u578b<\/strong><\/strong><\/td>TFe<\/strong><\/strong><\/td>CaO<\/strong><\/strong><\/td>SiO<\/strong>2<\/sub><\/strong><\/strong><\/td>\u6c27\u5316\u9541<\/strong><\/strong><\/td>\u950c<\/strong><\/strong><\/td>C<\/strong><\/strong><\/td>Al<\/strong>2<\/sub><\/strong>O<\/strong>3<\/sub><\/strong><\/strong><\/td>Na<\/strong>2<\/sub><\/strong>O<\/strong><\/strong><\/td>Pb<\/strong><\/strong><\/td><\/tr>
\u70e7\u7ed3\u7c89\u5c18<\/strong><\/td>23.1<\/td>11.0<\/td>3.2<\/td>1.5<\/td>0.5<\/td>10.0<\/td>1.5<\/td>2.24<\/td>2.15<\/td><\/tr>
\u9ad8\u7089\u7c89\u5c18<\/strong><\/td>24.2<\/td>3.5<\/td>2<\/td>4.2<\/td>6.7<\/td>33.3<\/td>1.9<\/td>0.63<\/td>0.15<\/td><\/tr>
\u8f6c\u6362\u5668\u7c89\u5c18<\/strong><\/td>60.7<\/td>10.5<\/td>4.4<\/td>2.5<\/td>0.11<\/td>1.6<\/td>1.7<\/td>0.43<\/td>0.03<\/td><\/tr>
\u7535\u7089\u7c89\u5c18<\/strong><\/td>~36<\/td> <\/td> <\/td> <\/td>~25<\/td>~2<\/td> <\/td> <\/td>~4<\/td><\/tr>
Mill Scale<\/strong><\/td>72.2<\/td>1.9<\/td>2.1<\/td>1.5<\/td>–<\/td>1.2<\/td>1.8<\/td>–<\/td>–<\/td><\/tr>
Converter Sludge<\/strong><\/td>65.6<\/td>10.3<\/td>1.9<\/td>3.5<\/td>0.2<\/td>1.7<\/td>1.8<\/td>0.19<\/td>0.02<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Cold Briquetting: A Proven and Efficient Solution for Steel Waste Recycling<\/strong><\/h2>\n\n\n\n

Cold briquetting is a room-temperature compaction process that converts fine particles into dense, robust briquettes without the need for sintering or high-temperature treatment. It is especially suitable for:<\/p>\n\n\n\n