Refractory & Ball Slag Dart, Steel Plant Control Slag Dart, Slag Dart For Steel Making Supplier

Features

•Higher bulk density

•More resistant to impact, burst and erosion

•Customize slag darts used for 30-300 ton BOF converts based on your requirements

Description

In the converter steel-making processing, a large amount of molten steel slag is produced when smelting in the BOF. The slag dart is a cone shaped plug with a refractory covered guiding rod, it has three slot design which is enough for the liquid metal to flow and block the slag. The slag dart is inserted into the taphole toward the end of the tapping operation by slag blocking dart application machine to block slag inflow ladle, the performance can be increased to 96%, Slag layer< 40mm. The slag dart has an obvious effect on increasing steel yield and purity as well as the quality and mechanical performance of steel.

Technical Parameter

Technical Specification Table

Item Name Slag dart  Slag Stopping Plug  Slag Control Dart

Total Length 1100~1680mm

Height of Head 150mm-230mm, according to drawing

Diameter of Head 200-350mm, according to the size of tapping hole

Density of Head 3.1-4.0g/cm3

Density of Tail 2.8g/cm3

Temperature Application 1790℃

CCS ≥20 MPa

Note: All of these could be customized according to customer's requirements.

Darts head (Chemical Analysis)

Name of composition %

Al2O3 38 Min

MgO 38 Min

SiO2 8.0 Min

Fe2O3 3~5

Darts tail (Chemical Analysis)

Name of composition %

Al2O3 42 Min

MgO 39 Max

SiO2 7 Min

Supplementary Properties

Name Description Index

BD g/cm3 Dart head 3.8  Min

Dart tail 2.7  Min

Service Temperature ℃ Dart head 1750 Min

Dart tail 1750 Min

CCS kg/cm2 Dart tail 70.0 Min

Dart tail 70.0 Min

Application

Slag Dart is usually used in converter tapping process. Blocking slag in tapping process reduces phosphorus in molten steel, and increase the alloy consumption; reduces various objects mixing into steel, improves the steel quality; reduces slag sticking in the ladle, improves the ladle life; reduces refractory consumption, and providing better conditions to refine steel. 

Yuntian is a leading manufacturer of slag dart machine, slide gate plate and slag stopping ball in China. If you want to know more about the products, you can contact us or visit our factory. We will use our professionalism to provide you with quality service.