Karo masalah Langkah Uji Pengaturan Penggalian Pasir Kali ing Provinsi Hunan ing taun 2012, penambangan pasir alami wis terus dibatesi. Meanwhile, traditional machine-made sand production line has such problems as poor grading, big fine modulus, mixed concrete with low strength and water pollution, etc., which incur criticisms. In light of this, LONGCHENG Inc. , the local famous manufacturer of concrete aggregate, purchased from SBM the world-class dry-type sand-making system---VU Agregat Optimization System and put it into use in the late 2015, absolutely solving the problems existing in wet-type sand-making system like large fine modulus, low yield and severe dust pollution.
Hunan yaiku salah siji provinsi sing nduweni akeh sandstone alami kanthi kualitas tinggi sing disebar ing lembah Kali Xiang lan Danau Dongting. Nanging, ing taun-taun pungkasan, keterlambatan ing teknologi produksi pasir tradisional lan kekacauan pasar pasir kanggo konstruksi nyebabake luwih akeh penambangan ora sah sing mengancam jumlah sumber daya sandstone ing Hunan lan nambah biaya penambangan. Sawise masalah Langkah Uji Pengaturan Penggalian Pasir Kali ing Provinsi Hunan ing taun 2012, penambangan pasir alami wis terus dibatesi.
Ing kahanan sing pasir alami saya sithik nanging saya larang, pasir buatan mesin, minangka gantine, berkembang kanthi cepet, ngisi celah pasar pasir alami. Saiki, Hunan wis ngalokaké sawetara kebijakan kanggo ningkatake proyek pasir buatan mesin. Ing sawetara wilayah, slag industri, limbah konstruksi lan watu tandus digunakake kanggo nggawe pasir supaya bisa ngembangake ekonomi daur ulang supaya industri pasir buatan mesin katon kaya bidang tradisional lan anyar.
Traditional machine-made sand production used the wet-type sand-making system which controls the stone powder content through washing gumming technology. In the process of washing machine-made sand, part of the fine particles below 0.6mm would be removed with the mud, impurities and stone powder below 0.075mm. This would cause the poor grading, big fine modulus and concrete with low strength.Meanwhile, it also reduces yield, wastes resources, and leads to water pollution, impeding clean production.
Given the heavy demand for high quality machine-made sand in Hunan and the weaknesses brought by the wet-type sand-making system, sand-making enterprises have started to search for a new technology to replace it. So this time LONGCHENG.Inc. selected SBM’s VU Agregat Optimization System which uses unique dry-type sand-making technology. It avoids the problems in wet-type technology and can process the high quality machine-made sand to replace natural sand. The VU system, therefore, has won high praise from cooperative enterprises in Hunan.
Material mentah: batu kapur (limbah saka pabrik bahan watu, cip watu berharga rendah)
Ukuran umpan: 5-15mm
Isi banyu: <2%
Isi lempung: <1%
Aplikasi produk: Pasir kualitas tinggi digunakake kanggo nyiapake beton lan mortir campuran; Bubuk watu kualitas tinggi kanggo ngganti abu terbang.
Fine modulus of machine-made sand: 2.7±0.1
Kesempurnaan bubuk watu cocog karo standar sekunder abu terbang.
Batu Kapur
Bubuk watu kualitas tinggi
Pasir kualitas tinggi digunakake ing persiapan beton
Pasir kualitas tinggi digunakake ing persiapan mortir campuran kering
Kanggo nyukupi permintaan sing saya tambah kanggo pasir kualitas tinggi lan syarat kinerja beton lan mortar, SBM ngentekake 5 taun kanggo ngembangake sistem VU ing situs uji optimisasi agregat khusus kanthi pengalaman luwih saka 30 taun ing industri iki.
The VU Agregat Optimization System is a system designed to produce high-quality machine-made sand, which overcomes the problems in sand-making technology, including crushing, grinding and separating.
Ing proyek iki, Sistem Optimisasi Agregat VU sampurna netepi kabeh standar produksi pasir sing diprodhuksi mesin kanggo pelanggan.

The new generation of Mesin Pembuatan Pasir VU firstly realizes the grinding technologies including high-frequency "stone hitting stone" and "material cloud". Compared to VSI Sand Making Machine, the VU system increases the sand rate and fine sand rate by over 10%.

-----Efisiensi tinggi
The combination of crushing, screening and powder separating, the screen can finish material screening and stone dust removing at the same time because of its full closure, dust removal using negative pressure and uniform screening.
Volume angin lan saluran aliran bisa nggayuh penyetelan presisi online terus-terusan tanpa ngganti jaring layar lan bagean liyane. Halus akhir pasir bisa dikontrol ing kisaran 2.5-3.2, isi bubuk ing kisaran 3-15%.

-----Optimasi wujud partikel
Imitating formation principle of natural sand, the machine adopts the global pioneering technologies of "low energy crushing and dressing" and "self-grinding via falling mode". which can validly remove the edges on the surface of final products and increase the volume of fine sand about 0.6mm, the voidage reduces 1-2%, the flow time 5%.
Teknologi pengolahan anyar lan terarah nyuda konsumsi energi lan nambah umur komponen rentan (Ing syarat sing padha, umur luwih saka sepuluh kali saka penghancur impak).


Pangggunaan kolektor debu tekanan negatif lan operasi tertutup nggawe debu lan polusi luwih sithik, kanthi lengkap selaras karo standar nasional konstruksi "ijo".
The design of automatic monitoring and material discharging of fine ore bin makes the fine material storage and transportation possible by pressing a button. It greatly reduces labor intensity and operation costs.

The controlling and monitoring tasks of all machines are integrated into the central control system, which greatly simplifies the operation process and ensures safe, continuous, and stable production.
Nyetel lan njaga parameter operasi optimal bisa dilakoni. Lan kualitas produk tetep stabil. Sistem iki bisa maksimalake produktivitas lan njaga efisiensi keseluruhan ing tingkat paling dhuwur.
Tahap pertama:
Pemecahan: Watu sing pecah mlebu ing Mesin Pembuatan Pasir VU kanggo diparut. Bahan datar-panjang lan pinggiran pasir ing kene dicopot kanggo entuk ukuran partikel sing dibutuhake.
Tahap kaping loro:
Screening and grading: the crushed stone is evenly fed into the Layar Kontrol VU FM through a feeder. Grading the machine-made sand is to precisely control the graduation of machine-made sand. Then the unqualified materials would be sent back into the crushers to be crushed again and redundant stone powder would be collected by the Sistem Misahake lan Ngumpulake Debu.
Tahap ketiga:
Particle shape optimization: the qualified machine-made sand graded by FM Control Screen enters the particle shape optimization machine. The edges of the final sand would be removed here.
Tahap kaping papat:
Wet lan transportasi: Pasir sing wis dioptimalisasi maneh mlebu ing blender penghumid kanggo dilembabake. Kadar banyu pasir pungkasan dikontrol kanggo njamin kualitas pasir sing diprodhuksi.
Tahap kalima:
Transportation, storage and packing: The redundant stone powder is collected by the pulse dust collector and then sent into the finished product tank for storage through a pneumatic carrier. Finally, the final products are transported after being packed.
After fully understanding the customer’s conditions, we finally worked out a proper layout scheme after discussing the specific situation, conducting design and evaluating the scheme. It ensures a suitable, economical and profit-maximized production line customized for the customer.
SBM ngembangake Sistem Optimalisasi Agregat VU otomatis penuh sing dirancang kanggo memenuhi permintaan kanggo panggolongan/modulus kehalusan lan kandungan serbuk ing pasir sing digawe mesin. Iki ngatasi masalah sing ana ing proses optimalisasi kalebu ngancurkan, nggronjal lan misahake.
SBM has a skilled and experienced after-sale service team. All members are earnest and innovative. So far, thousands of engineering projects have accepted the installation and commissioning service. Meanwhile, SBM would help customers train their operating staff until they can operate the production lines independently.
In order to make customers understand the machine maintenance and repair, SBM supplies customers with the machine instruction manual that shows the detailed analysis of the machines and marks each part. It not only helps customers know the machine structures but also makes the part replacement easier.

The whole VU Agregat Optimization System production line offered by SBM is compact structurally and reasonable on design. This production line achieves maximizing productivity and minimizing operation costs. The whole production process is dustless and the redundant stone powder is recycled. The produced stone and sand have perfect grain shape. The sand grading is satisfying. So concrete preparation in the mixing plant is very stable and reduces the use of cement. The cost of production is, therefore, reduced.










Grading: For dry-type sand-making system, after the powder separating machine, the soil particles in the artificial sand can be removed and the sand can meet the standard for construction. Besides, the stone powder content in artificial sand can be controlled by the powder separating system under the national regulations so that the compressive strength and mixability of concrete can be increased. For wet-type production, in the process of sand-washing, the washing sand would be removed with stone powder, leading to the shortage of washing sand in finished sand product and influencing the grading of sand.
Cost: The production cost of the dry-type sand-making production line is relatively low, because it uses a high-efficiency powder separator to separate sand and powder and does not require much water for washing.
Environment: Unlimited by water supply and environment, the dry-type sand-making system can produce sand in water-scarce areas. But for the wet-type sand making production line, making sand must be carried out in water-rich areas. And the production is impossible in winter in high-latitude zones.
Perlindungan lingkungan: Water in the dry-type production line is not required. The stone powder in the production can be used reasonably. So, to some extent, the water and minerals are saved. Moreover, it brings no sewage and sludge. It is more environmentally friendly than the wet-type sand-making production line.