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钢销、钢渣粒子钢液压压制成型技术介绍

Introduction of Hydraulic Pressing Technology for Steel Pin and Slag Particle Steel

唐山市鑫虎冶金科技有限公司，经过大量研发和科研实验，研究成功将钢销、钢渣粒子钢、钢渣精粉、高品位铁粉还原等通过液压压制成型的设备，现已经批量投入生产使用

Tang Shan  Xin Hu metallurgy Technology Co., Ltd. has successfully reduced steel pins, steel slag particle steel, steel slag powder and high-grade iron powder by hydraulic pressing through a large number of R&D and scientific research experiments. Now it has been put into production and use in batches.

1、本系统设计依照的基本原则是：

（1）采用先进的低能耗装备。

（2）坚持可持续发展战略，提高能源，资源的利用效率。

（3）以环境效益和综合经济效益为中心，实现企业的清洁生产。

（4）优化工艺方案，总体布局紧凑合理，工艺流程简洁顺畅。

（5）厉行节约，降低投资。

1.     The basic principles of the system design are:

(1)  Use advanced low-energy equipment.

(2)  Adhere to the strategy of sustainable development and improve the utilization efficiency of energy and resources.

(3)  Centering on the environmental and comprehensive economic benefits, the clean production of enterprises.

(4)  Optimizing process plan, compact and reasonable overall layout, simple and smooth process.

(5)  Strictly economize and reduce investment.

 2、钢销、钢渣粒子钢、钢渣精粉、高品位铁粉还原等液压压制成型系统工艺流程

     2、Process flow of hydraulic pressing forming system for steel pin, steel slag particle steel, steel slag concentrate powder and reduction of high-grade iron powder

（1）工艺流程描述

Process description

钢销、钢渣粒子钢、钢渣精粉、高品位铁粉还原等液压压制成型系统工艺是将钢销、钢渣粒子钢由上料机加入到系统设备，由低温对流烘干器和精确调温器进行温度控制，对钢渣粒子钢进行烘干，然后经中间转运器输送到液压成型机，经液压按需求调整液压压力（0-315bar动态可调）压制成型后将压制好的粒子钢块由装载机吊运至成品库，期间部分热量由高效换热器进行回收利用，设计有除尘系统对生产过程中产生的废气、粉尘等污染进行环保处理。

Steel pin, steel slag particle steel, steel slag powder, high-grade iron powder reduction and other hydraulic pressing forming system technology is to add steel pin and steel slag particle steel to the system equipment by feeder, temperature control by low-temperature convection dryer and precise thermostat, drying steel slag particle steel, and then conveyed to the hydraulic forming machine through intermediate conveyor, hydraulic pressure adjusted according to demand (0. - 315bar dynamic adjustable) After pressing, the pressed steel particles are hoisted from loader to finished product warehouse, during which part of the heat is recovered and utilized by high efficiency heat exchanger, and a dust removal system is designed to deal with environmental pollution such as waste gas and dust produced in the production process.

（2）工艺流程图

Process flow chart

（3）主要设备部件包括钢渣粒子钢上料机、低温对流烘干器、精确调温烘干器、余热回收、除尘器、中间转运器、液压成型机、循环风机、成品输送设备、管道、自动控制系统等。

The main equipment components include steel slag particle feeder, low temperature convection dryer, precise temperature regulating dryer, waste heat recovery, dust collector, intermediate transporter, hydraulic forming machine, circulating fan, finished product conveying equipment, pipeline, automatic control system, etc.

3、安全可靠、优势明显

Safety, reliability and obvious advantages

A、渣钢根据粒度不同以不同方式回收利用

Slag steel is recycled in different ways according to its particle size.

 （1）A1级渣钢，TFe≥80%，粒度>75（mm）为初选渣钢，经电磁除铁器选出，供给转炉炼钢使用。

Grade A1 slag steel with TFe (> 80%) and particle size > 75 (mm) is the primary slag steel seleced by electromagnetic iron remover and supplied to converter steelmaking.

（2）A2级渣钢，TFe≥80%，粒度10-75（mm）2#棒磨机提纯后，进入2#振动筛，筛上产物，供给转炉炼钢使用。

Class A2 slag steel with TFe (> 80%) and particle size of 10-75 (mm) 2 # bar mill is purified, and then it enters 2 # vibrating screen. The products are screened and supplied to converter steelmaking.

（3）B1级磁选粉，TFe≥80%，粒度5-75（mm），经2#棒磨机提纯后，进入2#振动筛，筛下产物，再进行二次筛分，筛上产物，供给转炉炼钢使用。

Level B1 magnetic separator powder, TFe (> 80%) and particle size 5-75 (mm), purified by 2# bar mill, enters 2# vibrating screen, sieves the product, then carries on the second sieve, sieves on the product, supplies the converter steelmaking use.

（4）B2级磁选粉，TFe≥42%，粒度<5（mm），经2#棒磨机提纯后，进入2#振动筛，筛下产物，再进行二次筛分，筛下产物，返烧结使用。

B2 grade magnetic separator powder, TFe (> 42%) and particle size (< 5 mm), purified by 2 # bar mill, enters 2 # vibrating screen, sieves the product, then sieves the product twice, sieves the product, and returns to sintering.

（5）尾渣，MFe<3%，粒度＜10（mm），经破碎、磁选、提纯后的产物。

Tailings, MFe < 3%, particle size < 10 (mm), after crushing, magnetic separation, purification products.

B、 小颗粒渣钢烧结和直接入炉的弊端

Disadvantages of Sintering and Direct Furnace Entry of Small Particle Slag Steel

●  烧结设备大型化和自动化，投资和运行费用较高

Large-scale and automation of sintering equipment, high investment and operation costs

● 由于煤中含硫，所以烧结会排放出有害气体产物二氧化硫，必须进行烟气脱硫处理。

Because of the sulfur content in coal, sulfur dioxide, a harmful gas product, will be discharged from sintering, so flue gas desulfurization must be carried out.

 ● 由于烧结温度很高，烧结矿不能热送高炉，即使回收部分余热，还是要排出大量废热

 Because of the high sintering temperature, sinter can not be hot-fed to blast furnace. Even if part of the waste heat is recovered, a large amount of waste heat must be discharged.

● 氧化铁皮为片状形态，在烧结过程中影响料层的透气性，从而降低烧结产量。并且细小的颗粒容易被气流抽走增加除尘系统负荷。

  The sheet shape of iron oxide sheet affects the permeability of the material layer during sintering process, thus reducing the sintering output. And fine particles are easily sucked away by airflow to increase the load of dust removal system.

  ● 粒子钢直接加入转炉产生较大的火焰和喷溅，存在人员和设备的安全隐患。

 Particle steel directly added into converter produces larger flame and splash, which has potential safety hazards for personnel and equipment.