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Cement L-NIB

Cement L-NIB (Low-dimentional Nano Insulation Board) is a new type of thermal insulation material developed and produced by our company on the basis of aerospace material technology, with special treatment and mixing of nano scale siliceous material and CL series auxiliary materials.

Overview

The cement L-NIB (Abbr. Low-dimentional Nano Insulation Board) is a new type of thermal insulation material developed and produced by our company on the basis of aerospace material technology, with special treatment and mixing of nano scale siliceous material and CL series auxiliary materials.

 

The typical properties of cement L-NIB are:

1. High refractoriness

2. Low thermal conductivity

3. High mechanical strength

4. Easy construction and high cost performance

It is mainly used in the industries such as building materials, metallurgy, chemical, electric power, home appliances etc. It signifies a new domestic revolution in the thermal insulation field.

 

Theoretical basis of Cement L-NIB:

1. Use solid materials with low thermal conductivity.

2. Use ultrafine particles to increase the thermal conduction length.

3. The small void space prevents gas molecules from forming convective cycles at high temperatures.

4. The selected opacifier particles disperse the infrared radia tion to minimize radiation.

5. The above measures enable the thermal insulation material to achieve low thermal conductivity; low convective heat transfer, and low radiative heat transfer.

 

Technical parameters of Cement L-NIB

Items CL500 CL550
Color White Grey
Refractoriness (℃) 1540 1540
Volume Density (kg/m3) 500 550
Cold Crushing Strength (MPa) 5.5 1.4
(1000*C/h,%)

Linear Shrinkage Percentage (at 1000°C)

0.1 1.1
Heat Conductivity Coefficient (W/m.k)
6001 0.020 0.023
BOOT 0.021 0.031
1000TC 0.023 0.042

 

Energy-saving test of Cement L-NIB

Use two closed containers, and the inner insulation boards of the containers are respectively Cement L-NIB and calcium silicate board, with the same thickness of 40mm. Heat the two containers with internal electric furnace wire and maintain the same temperature, and compare the energy-saving effects of the two insulation materials.

 

Energy-saving test of Cement L-NIB

Use two closed containers, and the inner insulation boards of the containers are respectively L-NIB and calcium silicate board, with the same thickness of 40mm. Heat the two containers with internal electric furnace wire and maintain the same temperature, and compare the energy-saving effects of the two insulation materials.


PRODUCT TEST

            

Calcium silicate board at 720 ° C                     Cement L-NIB at 1000 ° C

Case study

Huaxin Cement (Wuxue) Co., Ltd. adopted our L-NIB and traditional calcium silicate board for left and right doors respectively.

After two months, it demonstrates from the pictures that the paint on the left door using L-NIB is intact, while the paint on the right door using traditional calcium silicate board had burnt and ruined. Through measurement (the measured positions are shown in the picture), it is found that the temperature of the left door is 102°C, while the temperature of the right door is 153°C, demonstrating an remarkable difference in performance.

No. Name of user

Calcium silicate

thickness (mm)

L-NIB

thickness (mm)

Shell temperature

 drop (C)

Used part
1 Huaxing Cement (Wuxue) Co., Ltd. 100 100 51 Kiln hood
2 Bohai Cement (in Huludao) Co., Ltd. 115 80 41.7 Tertiary air duct
3 Jiangxi Evergreen Cement Co., Ltd. 100 100 54 Kiln head cover
4 Nanyang Cement (Tiantai) Co., Ltd. 132 80 47 Precalciner
5 Fujian Cement (Sanming) Co., Ltd. 115 100 29 Precalciner
6 Guangling Cement (Jinyu) Co., Ltd. 100 80 22 Kiln head cover
7 Jinzhou Cement Co., Ltd. 115 60 35 Tertiary air duct
8 Zhejiang Cement (Tonglu) Co., Ltd. 100 50 25 ash chamber

 

Cement L-NIB and Calcium Silicate Board at 1000 ° C

Cement L-NIB Calcium Silicate Board

INTERNAL

TEMPERATURE

CASE TEMPERATURE POWER CONSUMPTION INTERNAL

TEMPERATURE

CASE TEMPERATURE POWER CONSUMPTION
Day 1
10:00 400 50 0 400 59 0
11:00 600 65 2 600 71 3.2
17:40 600 62 8.2 600 76 9.2
20:40 600 94 9.6 600 104 14.2
22:40 600 97 14.8 600 110 17.4
Day 2
6:00 600 95 24.7 600 110 29.1
8:40 600 94 27.9 600 106 33.1
10:30 800 122 33.3 720 205 40.9
13:00 700 112 36.9 695 190 49.4
16:00 700 113 42.1 700 192 60.1
Total(Power consumption) 42.1 60.1

 

The test results show that the cement L-NIB at 1000 ° C  has better thermal insulation effect and the container case temperature is lower. Meanwhile, the container with calcium silicate board consumes 60.1kWh, while the container with heat insulation material consumes 42.1kWh (save 18kWh), so the power consumption by calcium silicate board is 42.76% higher than that by heat insulation material.

 

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