亚洲色欲久久久综合网_欧美大成色www永久网站婷_日韩人妻无码精品-专区_美女扒开大腿让男人桶_天天天天躁天天爱天天碰2018

你好,歡迎訪問遼陽(yáng)縣天順爐料廠官方網(wǎng)站!

  Sitemap | RSS | XML
活性石灰價(jià)格

News

Products

contact

Contact: Mr. Bai


Phone: +86-13504193567


Website: www.lndhsy.cn/en


Address: Majia Village, Liuerbao Town, Liaoyang County, Liaoyang City


A Brief Discussion on the Production of Active Lime Factory and Its Role in Steelmaking

Your current location: Home page >> News >> Industry News

A Brief Discussion on the Production of Active Lime Factory and Its Role in Steelmaking

Date of release:2018-11-24 Author: Click:

With the continuous development of economic globalization, competition in the steel active lime market has become increasingly fierce. Traditional slag-making raw materials such as silicate or fluorite are used in the steelmaking process, and their effects can no longer meet the needs of the steel market. In order to speed up the slag formation rate in the steelmaking process, active lime is used in steelmaking. Activated lime has strong chemical properties and ability to participate in the reaction, and the content of harmful impurities is low. Therefore, active lime is used in steelmaking.


   1. Overview of active lime


   Because active lime has high reactivity, it can quickly and completely dissolve with molten steel in a short time. During the steelmaking process, the molten steel reacts with different substances to produce harmful substances, namely steel slag. To ensure the quality of steel, slag removal is required. The effect of adding limestone into molten steel as a slag-forming agent is significantly higher than that of silicate or fluorite. However, it also has a defect. Limestone is prone to endothermic reaction when exposed to high temperature, that is, calcium carbonate decomposition reaction, and requires a lot of heat, and slagging is delayed. Because the molten steel cools quickly, the decomposition reaction of calcium carbonate not only absorbs a large amount of heat, but also delays the slagging time, so that when the slagging starts, there is a shortage of heat. This not only prolongs the steelmaking time, but also increases the consumption of raw materials, and the quality of slagging will also be reduced. Therefore, it is proposed to first calcinate limestone into lime, and then use it in steelmaking.


Active lime manufacturers


   Lime powder can also be called calcium carbonate. Calcium carbonate active lime manufacturers are a very common mineral in our lives. It is mainly the main component of limestone and calcite. The use of limestone has a long history. A white powdery substance with calcium carbonate as the main component. The application range is very wide, the most common is calcium carbonate used in the construction industry, that is, industrial use; the other is food-grade calcium carbonate, which is widely used as a common calcium supplement. There are two commonly used calcium supplements-calcium carbonate: one is heavy calcium carbonate, which is crushed to a certain degree of fineness and used as food additives; the other is light calcium carbonate, which is made by calcining limestone have to.


   (1) Determination of lime activity by acid-base titration.


   (2) Index of lime activity


An index that characterizes the hydration reaction rate of quicklime, that is, in sufficient time, it is expressed in milliliters of 4mol/L hydrochloric acid consumed to neutralize the Ca(OH)2 produced during the digestion of quicklime.


    (3) The definition of the activity of lime: the structure of lime is closely related to the calcination temperature and calcination time. The organization structure that affects the activity of lime includes bulk density, porosity, specific surface area and grain size of CaO minerals. The smaller the crystal grains, the larger the specific surface area, the higher the porosity, the higher the lime activity, and the stronger the chemical reaction ability.


   (4) Application: Steelmaking practice shows that the price of this kind of active lime can increase the dephosphorization and desulfurization efficiency by 80%, while shortening the smelting time. It can completely react with the acidic substances in the molten steel within 3-5 minutes. The response time should be at least 6-10min. In addition, the furnace age is increased by more than 40%, and the consumption of charge is also reduced by 5-8kg/t steel. Calculated by 10 million tons, it saves about 15 million per year, and the production benefit is significant.


The address of this article:http://www.e-smarthome.com.cn/en/news/396.html

Key word:

欧美色欧美亚洲高清在线观看| 国产一区二区三区高清在线观看| 性做久久久久久| 蜜臀av在线播放一区二区三区| 色翁荡熄又大又硬又粗又动态图| 日本va欧美va欧美va精品| 国产sm重味一区二区三区| 免费少妇荡乳情欲视频| 女人扒开屁股桶爽30分钟| 性一交一乱一伦a片| 好大好硬好爽免费视频| 日本理伦片午夜理伦片| 免费观看的av毛片的网站| 久久婷婷综合色丁香五月| 香蕉人妻av久久久久天天| 久久水蜜桃亚洲av无码精品| 日韩精品一区二区三区色欲av| 国产suv精品一区二区33| 丰满少妇夜夜爽爽高潮水| 国产亚洲成av人片在线观黄桃| 国产伦精品一区二区三区| 日韩一区精品视频一区二区| 国语做受对白xxxxx在线| 囯产精品一品二区三区| 狠狠躁夜夜躁人人爽天天天天97| 99久久精品日本一区二区免费| 国产成人精品一区二区三区无码| а√天堂资源8在线官网在线| 免费无码成人av在线播放不卡| 亚洲爱婷婷色婷婷五月| 国产精品另类激情久久久免费| 久久久久成人精品无码中文字幕| 亚洲精品无码成人av电影网| 精品久久久久久久久中文字幕| 日本va欧美va欧美va精品| 亚洲丰满熟女一区二区哦| 成 人 黄 色 免费 网站无毒| 无码国产一区二区三区四区| 国产精品久久久久7777| 久久久久成人精品无码中文字幕| 黄瓜视频在线观看网址|