Ensuring the availability Manufactured Sand

Rock crusher unit price

Rock crusher unit price

Manufactured sand has caught the attention of the construction industry for its quality and the minimum damage it causes to nature. As the construction industry is in a constant state of expansion in these days, a few alternatives for river sand have come up for the industry. One among them is the manufactured sand or M-Sand, and is found to be suitable one to replace river sand. Once the M-Sand becomes more popular in the construction industry, the demand for river sand and illegal sand-mining would considerably come down.

There was uncertainty about using M-Sand for construction. In fact, more options are being probed so that the rivers would have a chance to be saved from illegal sand-mining. It shall take some time to convince the builders on the quality of the said sand. Once the structural engineers approved the application of M-Sand in construction, no one will have any second thought to use it.

Availability of sand near the construction site is the most important requirement of the industry which otherwise escalate costs. While M-Sand holds the promise of replacing river sand in the construction industry, there are issues of air pollution associated with it and availability of granite resource for the production of granite metal. The quarry dust generated as a waste product can be disposed of as landfill. The quality of sand is of great concern to the industry. If the crusher units do not give good quality sand, more water will be required to get the right concrete mix which will in turn affect the strength of the concrete. While M-Sand is considered likely to be replaced for the river sand, the major hurdle seems to be the high capital investment in the project besides getting licence from Government. At present, the M-Sand meets only about 10 percent of the demand. Ms. POABSONS, a Thiruvalla-based company, which have a quarry at Angamaly and Thiruvananthapuram, produce M-Sand.

Associated with the existing crusher units M-Sand production unit can be promoted by utilising the waste granite metals of the crusher units, and waste generated from quarries for M Sand productions.

Granite Dimension Stone(Rock)

Granite Dimension Stone industry in Kerala faces a set back due to the higher royalty rate prevailing in Kerala compared to other neighbouring States. In the Stale there are only 11 operating quarries of Granite Dimension Stone out of 100 and odd leases granted since 1992 onwards. The operating quarries are predominantly green and while varieties and have good market but at present there are no takers because of higher production cost and low sale value. Chinese are dumping granite finished products in the world market at cheaper rate and they supply slabs and tiles into global markets for a comparatively cheaper price because the rough blocks are produced procured at a very lower cost in China. This has affected the Indian export market also. Kerala has different varieties of marketable granites but the production cost in the state is very high compared to the other states. The quarries are operated with the expensive diamond wire saw cuttings methods which safe guard the environment. The royalty levied is higher in Kerala, which has been fixed in the year 1997.

It is imperative that adequate encouragement to the intending entrepreneurs in the trade is required. This could be effected only by making the field investor friendly and enabling Dimension Stone granite products to compete in the international market. This might result in revival of a number of defunct quarries and setting up of cutting and polishing units in the Stale which in turn generate considerable employment opportunities to the rural folk of the Stale.

The amount of waste rock and rejected blocks generated in the process of production of Dimension Stone is more than 50 % which could be made for gainful use for making small sized tiles.

Representation of the Registered Metal Crusher Unit Owners’ Association to the Technical Committee.

The Registered Metal Crusher Unit Owners Association had submitted a representation to the Technical Committee for consideration of their demands. The main issues narrated in the representation are as follows:

  • Non-availability of qualified blasters.
  • Non-availability of qualified mine mates.
  • Government of India have prescribed 500m as danger zone for blasting.
  • Short period of quarrying lease.
  • Sound and dust vibration limits.
  • Imposing arbitrary conditions by the Local Bodies like Panchayaths.
  • Charging of bulk ANFO may be permitted in holes upto 50mm diameter.
  • Detonation of ANFO by detonator.

The convener of ihe Technical Commiuee had circulated a copy of the representation to all members of Technical Committee for their valuable suggestions. Detailed deliberation was held on issues raised by the All Kerala Quarry and Crushers Association in the meeting convened on 28.07.2008. Now, Government have instructed Ms.Malabar Cements Ltd. to arrange training programme to 10 to 15 quarry workers in a phased manner who are nominated by Quarry Crusher Associations. After the training, these persons can approach the DGMS, Nagpur for issuance of Blasters’ certificate.

Though the accidents due to mining and quarrying operations in the State of Kerala is comparatively less, paramount importance need to be given for the safety of the workers involved in mining and quarrying operations as well as the public residing surrounding the mine or quarry. Thousands of Granite Building Stone and Laterite Building Stone quarries are under operation in the State. Many workers from within the State as well as migrated from other States have been working in this sector. More or less uniform distribution of density of residential buildings, high level of agriculture land utility practices, well connected roads and other transport networks in the state makes the land availability for the quarry operation limited. At the same time demand for building materials have increased manifold during the last few couple of years. To satisfy the increasing demand, many small scale quarries are being opened in different parts of the state. Since it is not a large scale industry in the state of Kerala and more over due to the above mentioned reasons most of the quarries are not well equipped with required safety measures. Mining and quarrying industry is one of the supporting sectors of construction industry and is closely linked with a community of transportation sector. A larger section of the society is directly or indirectly involved in this web of industrial sectors. The above factors hinder the implementation of sudden drastic corrective measures in mining and quarrying sector.

Accidents to the quarry workers, to the public and domestic animals are reported from different parts of the State. A serious one among them was the accident occurred in a granite building stone quarry at Kuzhoor near Mannoor in Kunnathunadu taluk of Ernakulam District on 22.12.2007, which took away the life of five quarry workers including two women. Followed by this incident Government have constituted a Technical Committee to study the mining/quarrying operations of Kerala with special focus on safety and environmental issues, ensuring availability of Manufactured Sand (M-Sand) at a reasonable price and boosting of the revenue collection to the Government exchequer.

Being a one time concentrated activity, mining of minerals has its own environmental and ecological fallout. With a length of 580Km coastal belt, which covers 16.4% of the total geographical area of the State, 28% geographical coverage of forest area, 44 rivers, 27 estuaries and seven Lagoons or Kayals 4 to 6 months period of monsoon rainfall, more or less uniform density of population all over the State and extensive wetland area makes the State ecologically fragile and sensitive to the quarry and mining operations. The adverse consequences manifest in diverse ways like deforestation, soil erosion, air and water pollution, landscape and bio-habitat disturbance and changes in quality of life of local people. Hence mining and mineral processing cannot be done with economic consideration alone. It is gratifying to note that because of the growing public concern and legislative and institutional initiatives, it is increasingly being realised that mining and mineral processing should be done with least disturbance to the natural ecosystem.

The need of the hour is to evolve plans and management strategies for quarry and mine safety and integrating environmental concern and protection with mining activities. During the study, the Technical Committee has dealt with the topics with an order of preference as safety, environment, mineral production and revenue to the exchequer. The Committee has heard the complaints and grievances of quarry and mine operators of the State. Due recommendations for ensuring safety and environmental protection, ensuring availability of Manufactured Sand (M-Sand) at a reasonable price and boosting of the revenue collection to the Government exchequer have been included in the report. I do hope that this report prepared by the Technical Committee will provide a basis for evolving policy guidelines for quarry and mine safety and environmental protection, ensuring availability of Manufactured Sand (M-Sand) at a reasonable price and boosting of the revenue collection to the Government exchequer.

Categories: Crushing Equipment Tags: , , ,

Products Quick Links