Load Reduction Test System LR 8000

For tests according to Standards to be selected among the following:
RUL ISO 7992, Clustering ISO 11256, Sticking TENOVA HYL

LR 8000 Test System

General Description

LR 8000 system is an automatic equipment able to operate the tests on iron ore and similar raw materials according to standards ISO 7992 (RUL), ISO 11256 (Clustering) and HYL Sticking.

Determination of Reduction is performed under mechanical Load and it is an iron ore testing method where a sample is isothermally reduced in a fixed bed, at a fixed temperature using proper reducing gas Mix., until a prefixed degree of reduction is obtained.

The equipment is based on a Control Cabinet connected with a vertical oven able to heat the reaction tube at test temperature, controlled by thermocouples placed in the oven wall and inside the reaction tube.   The test process is driven by a PAC unit (Programmable Automation Controller) with an I/O unit devoted to handle inputs and outputs from the probes and transducers of the system.

A Touch Screen user interface provides for a friendly guided instruction before starting the test and gives onscreen information about the status of the system as well as main test parameters during the run of the test. Test results are available On-Screen and also on an external memory unit (USB) for storage, print and post processing purposes.

The printing feature of the provided PC Software allows to print out the test results as prescribed in the Standards.

Control Cabinet

The Control Cabinet is equipped with a PAC unit (Programmable Automation Controller) and Touch-Screen Control System with specific software designed in order to comply with different standards.  Recording and Data Logging of all main system variables is available on external memory drive (USB).

RUL Test System Screen

RUL Test System – Home Page

 

All the messages, alarms and information on the status of the system are displayed on the Touch Screen unit.
The Touch Screen Unit is directly connected to the I/O Unit where all the signals, coming from the measuring instruments, are collected and processed.

The main Page (Home Page) displays the complete information about the status of the system and the following process variables:

  • Sample temperature
  • Sample weight
  • Sample height
  • Differential pressure on sample bed
  • Degree of reduction Rt
  • Oven temperature
  • Nitogen (purge gas) flow rate
  • Reacting gas Mix flow rate
  • Loading pressure over the sample
  • Total Test time from the start of the reaction

All these variables are available also in a graphic format in which all parameters are displayed vs. time.

Vertical Oven

The system is equipped with an Electric Vertical oven of about 12 kW maximum power. The oven design includes 3 horizontal heating zone. Each heating zone is constituted by silicon carbide heating elements electrically connected in series.

A quartz tube is placed inside the oven to avoid any contact between the reaction tube and the heating elements. An external alarm thermocouple is placed in the refractory wall to monitor the oven temperature.

This thermocouple is connected to the safety temperature circuit in order to avoid any over temperature. The maximum allowed temperature is set to 1200 °C. The vertical electric oven is equipped with a precision weighing system with a resolution of 0,1 g and a full scale value of 32 kg.

Printing Tool – PC Software

The Printing Tool is a Windows© software that allows to print, save and store all data of performed tests.
At the end of the test procedure, a new file is stored in the external memory USB stick.

RUL Test Printing Tool

RUL Test Printing Tool

Test results are displayed in both textual and graphical format. A spreadsheet layout is also available.
The printing feature of the Software allows to print out the test results as prescribed in the ISO procedures.

STANDARDS

Test Temp. (C°)

Reduct. Time (min.)

Sample Mass (g)

Gas MIX

MIX Flow rate (nl/min)

Max N2 Flow rate (nl/min)

Max Sample Δ Press.
(m bar)

Max sample height (mm)

Sample loading (kg)

Tumbler

ISO 7992
Reduction Under Load

1050 

up to
80% red. - max 240

1200

Mix D

83

83

20

75

100

-

ISO 11256
Clustering

850

up to
95% red.

2000

Mix F

40

40

-

-

250

Yes

TENOVA HYL
Sticking

950

up to
90% red.

1200

Mix S

55

30

-

-

-

-


Gas Mix Composition %

N2

CO

CO2

H2

MIX D

58

40

-

2

MIX F

10

30

15

45

MIX S

10

21

14

55

LR 8000 Specifications

OVEN

Max operating temperature Power:

12 kW

Max operating temperature:

1200°C

Heating Zones:

3 heating zones

Heating elements:

Silicon Carbide elements (12 elements)

External thermocouple:

"K" type Inconel shielded

Inner Chamber diameter:

180 mm

REACTION TUBES

Reaction tube type:

"Double wall" type
Material:

AISI 310

Inner Diameter:

125 ± 1 mm (110 mm for Sticking)

Internal thermocouple

"K" type (Inconel shielded)

GAS CONTROL UNIT 

Flow rate measuring devices

Mass Flow Meter

SAMPLE WEIGHING UNIT

Max weight:

30 kg

Resolution:

0,1 g

MAIN POWER

380 V  3 ph + Neutral (12 kW max)

Accessories

Reaction tube lifting tackle

Reaction tube lifting tackle
  • For insertion and removing of the reaction tubes
  • Vertical electric movement
  • Two controlled speeds – low / fast movement
  • Manual horizontal movement on rail
  • Max. weight 60 kg
  • Remote control
  • Rail included
  • Power 230 V 50 Hz

Reaction Tube Tripods

reaction tube tripods

Model:

  • TR 2000 – For CRI, MM 6000, SM 4000 reaction tubes
  • TR 4000 – For LR 8000 reaction tubes

Reaction Tube Cooling Devices

Cooling System - Complete - small Cooling System - Detail - small
  •  Digital Temperature controller
  • Ventilation Fan
  • Auto stop at preset temperature
  • Power 230 V 50 Hz

Model:

  • CS 2000 – For CRI, MM 6000, SM 4000 reaction tubes
  • CS 4000 – For LR 8000 reaction tubes