WO2019080410A1 - 一种熔炼炉渣的处理方法 - Google Patents

一种熔炼炉渣的处理方法

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Publication number
WO2019080410A1
WO2019080410A1 PCT/CN2018/076089 CN2018076089W WO2019080410A1 WO 2019080410 A1 WO2019080410 A1 WO 2019080410A1 CN 2018076089 W CN2018076089 W CN 2018076089W WO 2019080410 A1 WO2019080410 A1 WO 2019080410A1
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WO
WIPO (PCT)
Prior art keywords
slag
parts
smelting furnace
powder
lining
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Application number
PCT/CN2018/076089
Other languages
English (en)
French (fr)
Inventor
肖强
郭雄志
张云帆
徐方胜
周后飞
Original Assignee
深圳市铂科新材料股份有限公司
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Publication date
Application filed by 深圳市铂科新材料股份有限公司 filed Critical 深圳市铂科新材料股份有限公司
Publication of WO2019080410A1 publication Critical patent/WO2019080410A1/zh

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Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/14Cements containing slag
    • C04B7/147Metallurgical slag
    • C04B7/153Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/17Mixtures thereof with other inorganic cementitious materials or other activators with calcium oxide containing activators
    • C04B7/19Portland cements
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/005Separation by a physical processing technique only, e.g. by mechanical breaking
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04Working-up slag
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding

Definitions

  • the invention relates to the field of chemical environment treatment, and in particular to a method for treating smelting furnace slag.
  • Smelting is a common method for material preparation, and it is a key step in the preparation of metal materials. From non-ferrous metals to steel, smelting plays an important and irreplaceable role. Usually metal smelting occurs in a high temperature environment, so refractory materials in the smelting process are indispensable. Refractory materials such as furnace lining are essential materials in the metallurgical field, which provide a basic guarantee for the preparation of new materials. The main components are Al 2 O 3 and MgO, which can withstand the melting temperature above 1000 ° C and keep warm during the melting process. And to prevent the outflow of molten steel, so it is essential in the field of metallurgy.
  • the present invention proposes a method for treating smelting slag.
  • the invention adopts the following technical solution: a method for processing smelting slag, comprising the following steps:
  • step 2) crushing the large slag generated after the crushing in step 1) into fine particles or powder, and filtering through a 30 mesh sieve to separate the large unbroken alloy blocks;
  • step 2) The lining powder slag after being sieved in step 2) is magnetically separated in a magnetic separator, and the iron slag in the slag is adsorbed and separated by the magnetic properties of the N pole and the S pole;
  • the slag treated in the step 3) is continuously used in the lining material having a temperature resistance lower than 1000 °C.
  • the step 4) is replaced by: 180 to 240 parts of the slag after the step 3), 180 to 240 parts of ordinary Portland cement, 20 to 40 parts of white cement, 180 to 240 parts of river sand, and 50 to 70 parts of lime. 60 parts by weight, 60-90 parts of light calcium carbonate, 80-120 parts of wood powder, 40-50 parts of graphene, 30-40 parts of pentaerythritol, 30-40 parts of melamine, 5-15 parts of cement quick-setting agent, and uniformly mixed. cement.
  • the ball milling process in the step 1) is a horizontal ball mill
  • the steel ball is made of bearing steel
  • the diameter of the steel ball is 15 to 50 mm
  • the weight ratio of the ball material is 2:1 to 1:2
  • the rotation speed is 30 to 200 rpm. /min
  • the invention has the following beneficial effects: the processing method of the smelting furnace slag of the invention recovers and reuses the smelting furnace slag, solves the environmental pollution problem in the prior art smelting furnace slag treatment, and can be recycled and reused to be resistant.
  • the lining or cement material with low temperature requirements greatly saves the cost.
  • a method for treating smelting slag includes the following steps:
  • the steel ball of the horizontal ball mill is made of bearing steel, the diameter of the steel ball is 15 mm, and the weight ratio of the ball is 2 : 1, the speed is 30 rev / min, and the ball milling time is 60 min.
  • step 2) crushing the large slag generated after the crushing in step 1) into fine particles or powder, and filtering through a 30 mesh sieve to separate the large unbroken alloy blocks;
  • step 2) The lining powder slag after being sieved in step 2) is magnetically separated in a magnetic separator, and the iron slag in the slag is adsorbed and separated by the magnetic properties of the N pole and the S pole;
  • the slag treated in the step 3) is continuously used in the lining material having a temperature resistance lower than 1000 °C.
  • a method for treating smelting slag includes the following steps:
  • the steel ball of the horizontal ball mill is made of bearing steel, the diameter of the steel ball is 30 mm, and the weight ratio of the ball is 1 : 1, the speed is 100 rev / min, and the ball milling time is 30 min.
  • step 2) crushing the large slag generated after the crushing in step 1) into fine particles or powder, and filtering through a 30 mesh sieve to separate the large unbroken alloy blocks;
  • step 2) The lining powder slag after being sieved in step 2) is magnetically separated in a magnetic separator, and the iron slag in the slag is adsorbed and separated by the magnetic properties of the N pole and the S pole;
  • the slag treated in the step 3) is continuously used in the lining material having a temperature resistance lower than 1000 °C.
  • a method for treating smelting slag includes the following steps:
  • the lining and the iron slag are pulverized by a horizontal ball mill.
  • the steel ball of the horizontal ball mill is made of bearing steel, the diameter of the steel ball is 50 mm, and the weight ratio of the ball is 1 : 2, the speed is 200 rev / min, and the ball milling time is 10 min.
  • step 2) crushing the large slag generated after the crushing in step 1) into fine particles or powder, and filtering through a 30 mesh sieve to separate the large unbroken alloy blocks;
  • step 2) The lining powder slag after being sieved in step 2) is magnetically separated in a magnetic separator, and the iron slag in the slag is adsorbed and separated by the magnetic properties of the N pole and the S pole;
  • the slag treated in the step 3) is continuously used in the lining material having a temperature resistance lower than 1000 °C.
  • a method for treating smelting slag includes the following steps:
  • the steel ball of the horizontal ball mill is made of bearing steel, the diameter of the steel ball is 15 mm, and the weight ratio of the ball is 2 : 1, the speed is 30 rev / min, and the ball milling time is 60 min.
  • step 2) crushing the large slag generated after the crushing in step 1) into fine particles or powder, and filtering through a 30 mesh sieve to separate the large unbroken alloy blocks;
  • step 2) The lining powder slag after being sieved in step 2) is magnetically separated in a magnetic separator, and the iron slag in the slag is adsorbed and separated by the magnetic properties of the N pole and the S pole;
  • step 3 180 parts of slag treated in step 3), 240 parts of ordinary Portland cement, 20 parts of white cement, 240 parts of river sand, 50 parts of lime, 90 parts of light calcium carbonate, 80 parts of wood powder, graphene 40 Parts, 40 parts of pentaerythritol, 30 parts of melamine, and 5 parts of cement quick-setting admixture are uniformly mixed to make cement.
  • a method for treating smelting slag includes the following steps:
  • the lining and the iron slag are pulverized by a horizontal ball mill.
  • the steel ball of the horizontal ball mill is made of bearing steel, the diameter of the steel ball is 40 mm, and the weight ratio of the ball is 1 : 1, the speed is 120 rev / min, and the ball milling time is 20 min.
  • step 2) crushing the large slag generated after the crushing in step 1) into fine particles or powder, and filtering through a 30 mesh sieve to separate the large unbroken alloy blocks;
  • step 2) The lining powder slag after being sieved in step 2) is magnetically separated in a magnetic separator, and the iron slag in the slag is adsorbed and separated by the magnetic properties of the N pole and the S pole;
  • step 3 240 parts of slag after treatment in step 3), 180 parts of ordinary Portland cement, 40 parts of white cement, 180 parts of river sand, 70 parts of lime, 60 parts of light calcium carbonate, 120 parts of wood powder, graphene 50 Parts, 30 parts of pentaerythritol, 40 parts of melamine, and 15 parts of cement quick-setting admixture are uniformly mixed to make cement.
  • a method for treating smelting slag includes the following steps:
  • the lining and the iron slag are pulverized by a horizontal ball mill.
  • the steel ball of the horizontal ball mill is made of bearing steel, the diameter of the steel ball is 50 mm, and the weight ratio of the ball is 1 : 2, the speed is 200 rev / min, and the ball milling time is 10 min.
  • step 2) crushing the large slag generated after the crushing in step 1) into fine particles or powder, and filtering through a 30 mesh sieve to separate the large unbroken alloy blocks;
  • step 2) The lining powder slag after being sieved in step 2) is magnetically separated in a magnetic separator, and the iron slag in the slag is adsorbed and separated by the magnetic properties of the N pole and the S pole;
  • slag treated in step 3 210 parts of slag treated in step 3), 210 parts of ordinary Portland cement, 30 parts of white cement, 210 parts of river sand, 60 parts of lime, 75 parts of light calcium carbonate, 100 parts of wood powder, graphene 45 Parts, 35 parts of pentaerythritol, 35 parts of melamine, and 10 parts of cement quick-setting admixture are uniformly mixed to make cement.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

一种熔炼炉渣的处理方法,包括以下步骤:1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎;2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;4)将步骤3)处理后的炉渣继续使用在耐温要求低于1000℃的炉衬材料中。该熔炼炉渣的处理方法将熔炼炉渣回收再利用,解决了现有技术熔炼炉渣处理时的环境污染问题,可回收再利用制成耐温要求低的炉衬或是水泥材料,大大的节约了成本。

Description

一种熔炼炉渣的处理方法 技术领域
本实发明涉及化工环境治理领域,尤其涉一种熔炼炉渣的处理方法。
背景技术
熔炼是材料制备的常用方法,更是金属材料制备的关键步骤,从有色金属到钢铁,熔炼发挥着重要且不可替代的作用。通常金属熔炼发生在高温环境下,因此熔炼过程中的耐火材料必不可少。炉衬等耐火材料是冶金领域必备的材料,为新材料的制备提供了基础保障,其主要成分为Al 2O 3和MgO等,其可以承受1000℃以上的熔炼温度,在熔炼过程中起保温和防止钢液外流的作用,因此在冶金领域必不可少。随着冶金技术的发展,我国在金属材料制备方面产能越来越大,然而随着产能的逐步扩大,耐火材料的用量也越来越大。通常新的炉衬材料在冶金熔炼达到一定次数后,炉衬经过钢液长时间冲刷和高温腐蚀,材料需要更换,如果废旧的炉衬材料随意倾倒的话,会造成很大的粉尘污染,严重影响生态环境。此外由于经过钢液的长时间腐蚀,耐火材料内部含有大量的铁屑等残渣,该残渣通常是异形的,如果处理不当会给人们带来安全隐患,这些问题给熔炼后的炉渣处理带来了很大的问题,尤其是在我国对环保要求越来越严的情况下,如何有效解决该问题是所有冶炼厂不得不面临的难题。过去人们通常采用掩埋等方式处理这类材料,但是随着未来土地供应紧张及生态环保越来越高,因此如何解决该问题成了冶炼厂和材料制备厂不得不面对的难题。如果熔炼炉渣随意丢弃,除了容易造成粉尘污染,炉渣中的铁屑物质更 是给人们的安全带来了新的隐患。
技术问题
为解决熔炼炉渣给人们和环境带来的有害影响,本发明提出一种熔炼炉渣的处理方法。
技术解决方案
本发明采用如下技术方案:一种熔炼炉渣的处理方法,包括以下步骤:
1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎;
2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;
3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;
4)将步骤3)处理后的炉渣继续使用在耐温要求低于1000℃的炉衬材料中。
优选的,步骤4)替换为:将步骤3)处理后的炉渣180~240份、普通硅酸盐水泥180~240份、白水泥20~40份、河沙180~240份、石灰50~70份、轻质碳酸钙60~90份、木质粉80~120份、石墨烯40~50份、季戊四醇30~40份、三聚氰胺30~40份、水泥速凝剂5~15份混合均匀,制成水泥。
优选的,步骤1)中的球磨工艺为,采用卧式球磨机,钢球为材料为轴承钢,钢球直径15~50mm,球料重量比为2:1~1:2,转速30~200转/min,球磨时间10~60min。
有益效果
与现有技术相比,本发明具有如下有益效果:本发明的熔炼炉渣的处理方法将熔炼炉渣回收再利用,解决了现有技术熔炼炉渣处理时的环境污染问题,可回收再利用制成耐温要求低的炉衬或是水泥材料,大大的节约了成本。
本发明的最佳实施方式
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限为性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
实施例1
一种熔炼炉渣的处理方法,包括以下步骤:
1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎,卧式球磨机的钢球为材料为轴承钢,钢球直径15mm,球料重量比为2:1,转速30转/min,球磨时间60min。
2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;
3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;
4)将步骤3)处理后的炉渣继续使用在耐温要求低于1000℃的炉衬材料中。
实施例2
一种熔炼炉渣的处理方法,包括以下步骤:
1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎,卧式球磨机的钢球为材料为轴承钢,钢球直径30mm,球料重量比为1:1,转速100转/min,球磨时间30min。
2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;
3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;
4)将步骤3)处理后的炉渣继续使用在耐温要求低于1000℃的炉衬材料中。
实施例3
一种熔炼炉渣的处理方法,包括以下步骤:
1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎,卧式球磨机的钢球为材料为轴承钢,钢球直径50mm,球料重量比为1:2,转速200转/min,球磨时间10min。
2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;
3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;
4)将步骤3)处理后的炉渣继续使用在耐温要求低于1000℃的炉衬材料中。
实施例4
一种熔炼炉渣的处理方法,包括以下步骤:
1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎,卧式球磨机的钢球为材料为轴承钢,钢球直径15mm,球料重量比为2:1,转速30转/min,球磨时间60min。
2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;
3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;
4)将步骤3)处理后的炉渣180份、普通硅酸盐水泥240份、白水泥20份、河沙240份、石灰50份、轻质碳酸钙90份、木质粉80份、石墨烯40份、季戊四醇40份、三聚氰胺30份、水泥速凝剂5份混合均匀,制成水泥。
实施例5
一种熔炼炉渣的处理方法,包括以下步骤:
1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎,卧式球磨机的钢球为材料为轴承钢,钢球直径40mm,球料重量比为1:1,转速120转/min,球磨时间20min。
2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;
3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;
4)将步骤3)处理后的炉渣240份、普通硅酸盐水泥180份、白水泥40份、河沙180份、石灰70份、轻质碳酸钙60份、木质粉120份、石墨烯50份、季戊四醇30份、三聚氰胺40份、水泥速凝剂15份混合均匀,制成水泥。
实施例6
一种熔炼炉渣的处理方法,包括以下步骤:
1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎,卧式球磨机的钢球为材料为轴承钢,钢球直径50mm,球料重量比为1:2,转速200转/min,球磨时间10min。
2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;
3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;
4)将步骤3)处理后的炉渣210份、普通硅酸盐水泥210份、白水泥30份、河沙210份、石灰60份、轻质碳酸钙75份、木质粉100份、石墨烯45份、季戊四醇35份、三聚氰胺35份、水泥速凝剂10份混合均匀,制成水泥。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。

Claims (3)

  1. 一种熔炼炉渣的处理方法,其特征在于,包括以下步骤:
    1)将熔炼炉内大块残留的钢屑取出后,然后采用卧式球磨机将炉衬和铁渣粉碎;
    2)将步骤1)中破碎后产生的大块炉渣破碎成细颗粒或者粉状,采用30目网筛过过滤,将大块未破碎合金块分离出来;
    3)将步骤2)中过筛后的炉衬粉末渣,在磁选机中进行磁选分离,通过N极和S极的磁性将粉渣中的铁屑吸附,分离;
    4)将步骤3)处理后的炉渣继续使用在耐温要求低于1000℃的炉衬材料中。
  2. 根据权利要求1所述的一种熔炼炉渣的处理方法,其特征在于,步骤4)替换为:将步骤3)处理后的炉渣180~240份、普通硅酸盐水泥180~240份、白水泥20~40份、河沙180~240份、石灰50~70份、轻质碳酸钙60~90份、木质粉80~120份、石墨烯40~50份、季戊四醇30~40份、三聚氰胺30~40份、水泥速凝剂5~15份混合均匀,制成水泥。
  3. 根据权利要求1或2所述的一种熔炼炉渣的处理方法,其特征在于,步骤1)中的球磨工艺为,采用卧式球磨机,钢球为材料为轴承钢,钢球直径15~50mm,球料重量比为2:1~1:2,转速30~200转/min,球磨时间10~60min。
PCT/CN2018/076089 2017-10-26 2018-02-09 一种熔炼炉渣的处理方法 WO2019080410A1 (zh)

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