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Moisture measurement in bulk solids including RMC

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Time Domain Refractometry (TDR) is a method used to measure the dielectric constant (water content) of a material. Metal conductors or rods are used as wave guides for the transmission of the TDR-signal. The device generates a high-frequency-pulse (up to 1GHz) which propagates along the wave guides at the speed near to light, generating an electromagnetic field around the probe. At the end of the wave guides, the pulse is reflected to its source. The resulting transit time from picoseconds to nanoseconds and dielectric constant provide an accurate measurement of moisture content. The moisture content is calculated inside the device and is available at standard analogue outputs.

IMKO, a German company, which part of the Endress+Hauser Group has developed a patented measuring method called TRIME® TDR method. With this technology it is possible to measure the transit time with a resolution of 3 picoseconds. The TRIME® TDR method has been successfully used more than 30 years in the process industry.

The TRIME® TDR -technique has an ideal measuring frequency between 600MHz and 1.2GHz and the measuring field penetrates deep into the material. The electromagnetic pulses generated in the TRIME device are high enough and constant for good resolution and accuracy of measurement. In addition, disturbing influences such as electrical conductivity have nearly no effect. Precise moisture can be measured in temperatures up to 120°C. TRIME® TDR technology is used in Solitrend product which helps to increase product quality and reduce energy efforts due to precise moisture measurement.

The senor used in Solitrend is in direct contact with the material. Calibration is a simple linear equation. Measurement field adapts itself to the shape of material and is quite large. It is also undisturbed by dripping water, air and dirt. The probes are extremely rugged for exceptionally long operational life. It also replaces time consuming lab analysis and manual sampling with continuous online measurement.

Both In line as well as portable probes measurements are available.

Application

l The building industry. Moisture measurement in Ready Mix Concrete.

l In line moisture content measurement in bulk material or goods like wood chips, pellets, animal food etc.

l The glass and ceramics industry like silica sand, moulding sand, ceramics mass.

l Food Industry. Malting plants, Corn, Sludge drying, Fluid bed dryers (inlet/outlet).

Limitations of other methods

Capacitance method – This method works with single measuring frequencies between 5-80MHz. The dielectric constant is influenced both by moisture and salinity. It is very difficult to distinguish between the two influences and precise moisture measurements are difficult to achieve.

Microwave method – The frequencies of microwave techniques are generally higher than 2GHz. This technique leads to loss in resolution and accuracy of measurement having negative influence on the readings.

Conductance or Resistance method – This method have very low measuring frequencies of about 4kHz. There is a strong influence of different salinity of the bulk material on the measurement. The difference in salinity is caused by different mineral contents temperature. Another problem of resistance method is the low penetration depth of the measuring field.

Near-Infrared method (NIR)-This method shows a very lower penetration depth and, therefore, considerable influences of material surface and thickness.

Scan the QR code for more information or write to us on info.in.sc@endress.com.

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Rathi Steel Receives BIS Approval for SS 550 Reinforcement Bars

The approval is granted by the National Standards Body of the Govt of India

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Rathi Steel and Power Limited, a prominent member of the P.C. Rathi Group based in Delhi, has announced a significant milestone in its growth. In a filing pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, the company revealed that it has received the Bureau of Indian Standards (BIS) license for its SS 550 Reinforcement Bars.

The approval, granted by the National Standards Body of the Government of India, allows Rathi Steel and Power Ltd to use the BIS standards mark on its high-strength deformed stainless steel bars and wires for concrete reinforcement, specifically in the 32 mm diameter category. This certification is a crucial step for the company in enhancing the credibility of its products in the market.

The company further stated that it is actively working on obtaining similar approvals for other diameters and sizes of reinforcement bars to expand its product range and ensure a comprehensive product offering for the construction industry.

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NMDC Shares Rs 700 Bn Capex Plan with Vendors

NMDC’s target of 100 million tonnes by 2030 is inspired by the vision of the National Steel Policy

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India’s largest iron ore miner hosted a Vendor Meet in Hyderabad to share the company’s 100 MTPA roadmap with vendors from across the country. NMDC presented its CAPEX plan of Rs 700 billion for the next five years towards augmenting production capacity, building evacuation infrastructure and transforming the digital ecosystem. The public sector company promised ease of doing business and in return solicited speed and quality of the highest order from the partners.

Top brass of NMDC – Amitava Mukherjee, CMD (Additional Charge); Shri V Suresh, Director (Commercial); Shri Vinay Kumar, Director (Technical) and senior officers interacted with the network of contractors, consultants and vendors.

Setting the context for the meet, Amitava Mukherjee said, “This is not business as usual, 100 million tonnes by 2030 is a priority effort for NMDC and a once in a lifetime opportunity towards building a global mining powerhouse. We are looking at a capital expenditure of approximately Rs 700 billion.” He insisted that “our partners in progress should take this early head start, make financial arrangements, build up their resource base, deliver on timelines, and bring nothing
but the best to NMDC.”

The NMDC team laid out in great detail the upcoming infrastructure and innovation projects of the company in three sessions focused on expansion, evacuation, digital intervention and implementation strategies during the meet, followed by interactions with the vendors.

Delivering the closing remarks, the Director (Technical) of NMDC, Shri Vinay Kumar said, “Our vendors have ensured consistent growth, making NMDC a formidable team! However, it must be told that the aspiration now is to achieve more in the next five years than what we have done in six decades. Collective effort for seamless execution is the only way to realise the goal of 100 million tonnes by 2030.”

NMDC’s target of 100 million tonnes by 2030 is inspired by the vision of the National Steel Policy to build raw material security and self-reliance in the iron and steel sector of India.

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Bokaro Steel Plant Expansion to Boost Capacity and Employment

Expansion Plan to Increase Production to 7.55 MTPA

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Steel Minister HD Kumaraswamy announced a Rs 200 billion expansion plan for the Bokaro Steel Plant in Jharkhand on Tuesday, aimed at increasing its production capacity from 5.25 million tonnes per annum (MTPA) to 7.55 MTPA. The move is a step toward fulfilling India’s goal of self-sufficiency in steel production as part of the Atmanirbhar Bharat initiative.

The ambitious plan will include the construction of a new 4,500 cubic meter blast furnace, along with facilities such as thin slab casting, direct rolling, a calcining plant, a stamp-charged coke oven battery, and an expanded sinter plant. This overhaul is expected to strengthen India’s steel industry, contributing significantly to the nation’s economic growth and aligning with Prime Minister Narendra Modi’s vision of a 300 MTPA steel industry by 2030.

The expansion is also set to generate significant employment opportunities, including 10,000 indirect jobs and 2,500 permanent positions in the region. Additionally, the plant is making strides in sustainability with the installation of 30 MW of floating solar power and 20 MW of land-based solar power generation.

This expansion reaffirms India’s commitment to technological advancement and self-reliance in steel production, further enhancing the sector’s capacity to meet future demands.

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