产品应用领域(新)..

SECONDARY BOULDER BREAKING

矿石二次爆破

Secondary breaking in surface mines and quarries occurs where oversize rocks are produced from a primary blast that need to be reduced to a manageable size for loading and crushing. In practice most hard-rock surface mines and quarries would expect to re-blast or break up to 5% of their rock after effective primary blasting.

露天矿场和采石场的二次爆破，指的是发生在初次爆破后，那些体积过大的岩石需要再分解到可运输和压制的状态。在实践中，大多数出产硬质岩石的矿场和采石场，希望能有再次爆破，或者更为有效的初次爆破使他们出产的矿石体积分解至原体积的5%。

There are hidden costs associated w ith ‘oversize resulting from a mass blast using conventional explosives:

以下是使用传统的爆炸物导致分解后的矿石体积过大所引起的潜在的成本：

▪the oversized rocks are an obstacle to productive load and haul activity

▪体积过大的岩石是生产过程中装卸和搬运的一大障碍

▪they cannot be dealt with cost effectively due to size and get in the way

▪体积过大使它们很难有效计算成本

▪are normally left to be charged in the next mass blast, which often creates new oversize, thus the obstacles are perpetuated

▪通常成本会延续到第二次爆破中，而这次爆破的结果经常是矿石仍然体积过大，这种障碍无疑将具有持续性。

▪oversize impacts negatively upon production unless dealt with in the on-going production cycle ▪除非这样生产出来的矿石处于一个正在进行中的生产循环中，否则体积过大将对生产产生不利影响

▪tramming equipment over distances out the pit in order to use conventional explosives must be avoided; Wear and tear on final drives and tracks is a significant hidden cost.

▪长距离的用来运输传统爆炸物的矿车类装置必须要被避免使用，因为车道和车辆的损耗将是一笔巨大的隐性成本

Using Nonex cartridges for secondary breaking during load and haul activity is feasible, safe and productive; overall productivity is significantly enhanced.. Most open cast sites have large excavators, some of which have outlived their productive life, but make excellent support tools in the secondary breaking process. Material handling support for drilling, putting the oversize into manageable rows provides easy access to the rock and enhances safety. The same excavator loads the broken rock for removal

在二次爆破的装卸和运输过程中使用Nonex 弹夹（雷管）是可行，安全且具有生产力的。整体的生产能力将得到大幅提升。大多数露天矿都使用大型挖掘机，其中相当一部分已经超过了使用寿命，但仍能在二次

爆破作业中发挥良好性能。那些用于钻孔和分解体积过大岩石的装置非常易于搬运装卸岩石，从而也提高了安全性。而那些挖掘及同时也承担了把分解后的岩石运走的工作。

Secondary Breaking Options

Nonex offers a wide range, from 3-10g ‘rock poppers used for splitting oversize to fit the crusher jaws, drilled electrically, and from 20g up in steps of 20g to 250g drilling diameter 40mm using hand-held rock drills, using a rig to drill diameter 64-76mm holes charge weights in the diameter 60mm range from 200 –500g charge weights, which also prove effective in the Nonex equivalent of a ‘mass’ breaking application. The common denominator provided by Nonex, non-explosive, non-detonating technology is controlled, precision breaking; no shockwave, minimal to 100% fly rock control and the capacity to produce the desired particle size for handling and crushing, which is what every pit manager wants.

Nonex提供了大范围的（装置供选择）。其中，“岩石爆破者”用于分解体积过大的3-10克的岩石到可以适应碎石机钳口的尺寸，他们电动钻孔，20克到250克的，深挖40毫米的采用手动岩石钻机，而对于深挖64-76毫米60毫米直径孔洞，重量范围200-500，Nonex提供的装置也被证明有效。Nonex产品的共同特性，采用的是非爆炸非引爆技术，这样的爆破是可控及精确的。没有震波，100%的控制能力，以及生产出处理和粉碎所需要的尺寸的能力，这是每一个矿场负责人梦寐以求的。

Frequently, the Nonex way is also the most cost effective way. Nonex is often used in combination with an excavator mounted hydraulic hammer. Nonex is used to drill and break large oversize >1m3 and particularly large ‘elastic’ rock, which resists hydraulic breaking. Rocks < 1m3 and brittle rock, (nonelastic) break easily, then an hydraulic hammer which doesn’t need drilled holes is more cos t effective. The combination is usually ideal.

而且在通常情况下，Nonex技术也是最能有效省钱的方法。Nonex经常和架设了液压锤的挖掘机一起使用。Nonex被用来钻孔，以及分解体积大于1m3的体积过大岩石，特别是那些具有“弹性”的，能抵抗液压锤振捣的岩石。体积小于1m3的岩石和那些易碎的岩石能被轻易粉碎，所以一个不需要钻孔的液压锤则是最经济有效的选择。这样的组合往往是最理想的。