Drying before use

Dry in oven for 30 mins to 4 hours based on water content between 50-80C before use. I dried the unpurified PA substance in the oven (no problem) but haven't yet confirmed with pure PA crystals. It should be safe because I dried DDNP in the oven the same way, which should be considerably more sensitive.

Preparing 1800kg of AN prills (CAN 27-0-0)

There are large 300-600L diesel tanks in most farms (for fueling the tractor) so just call the supply company and order the required amount of diesel. My 300L tank was almost half full so I ordered an additional 150L this way. I also bought 5 x 20L gas tanks to transport the diesel from the equipment building (where the diesel tank was) to the barn cellar (where I was going to manufacture the ANFO). Since a 20L plastic tank is too heavy to handle efficiently I poured the content into 5 x 4L plastic bottles which I had leftover from all the distilled water used previously.

When you make the order at your local farming supplier (the supplier near the farm you are renting) you should order twice as many "dummy fertilizer). Obviously, before you can make an order in the first place you need to register a "farming company" and acquire a "producing number" from your government. In other words, you have to register as an "official farmer" or you will not be able to make an order from the farming supplier. You should also have enough farming land to justify the order you are placing. 50-90 decares (5-9 hectares) should allow you to easily justify the purchase of 4-5 tons of fertilizer whereas half being CAN 27-0-0. If you do not take these precautions there is a chance you may not pass the scrutiny of the farming supplier as red flags will arise. Also. f example when you order 3 x 600kg bags of CAN27 you should also order at least 3 x bags of the two other types of fertilizer. I ordered 5 x 600kg bags of CAN27 and 5 x of 600kg "dummy bags" which proved to be too much for one person to process.

I then told the office to place the CAN inside of the equipment building and the rest outside. The supply truck uses a "hook" that can place the bag in a 3m radius of the truck. The positive thing about this is that I could close the building sliding door (3 x 3m) and further process the AN without anyone outside noticing.

I then brought 14 x 50kg fertilizer bags (previously ordered from a Chinese company, the bag has two layers, a carry layer and an inner plastic bag that prevents moisture getting in or out) and filled up the bags, transporting them to the barn basement by car (the barn basement is 100m away from the equipment building). When I had emptied 3 x 600kg bags I had around 36 x 50kg bags which I had transferred to the barn basement. Don't worry about water absorption at this point as the prills have a layer that prevents the prills from absorbing liquid.

I bought several different blenders (both stationary and handheld) and found a suitable machine, which I bought 8 of. This blender, a stationary Electrolux machine with an ice crushing function offered optimal circulation of grinded material vs. prills which allowed me to grind 1kg every 30 seconds. I set up 4 of these blenders 5cm from each other on a work bench with an empty 50kg fertilizer bag next to a bag filled with 45kg of AN prills (placed just below the 4 blenders so you can empty the blender glass containers quickly and pour it into the empty bag). You fill up each blender and put it on the lowest strength grinding (you don't really need more grinding power than this and higher power will most likely wear out the blenders considerably faster). I made a nice rotation ensuring that the uptime of the 4 blenders. I then prepared 12 x 4L containers of diesel close by. Although ANFO requires 7% diesel for optimal detonation you should add 10% or perhaps even 13% like I did to account for any evaporation etc.

As you crush the prills to fine powder it will immediately start to absorb water from the air, so as soon as you have grinded a portion you must hurry to pour the content in the empty bag. Once I had filled up 1/4 of the bag I added 1,7L of diesel, before continuing. You add approximately 1,7L at as you fill up the bag with 1/4, 2/4, 3/4 and 4/4. When completed I wrapped the inner bag (like the way you make a pig tail on hair) and closed it with 10 cm of duct tape. Then continuing to wrap, I left 2 cm of empty space before doing the same again. I then bent the upper wrapping down on the lower wrapping and closed it with more duct tape. I then wrapped the outer bag with two portions of 20cm duct tape. I don't know for sure if this is optimal, but I couldn't think of a more efficient way to seal the bag properly. After I had grinding 600kg of prills the first blender broke down (the knife handle broke). The second machine broke down shortly after. I replaced these with the backup blenders and continued until I was done preparing 34 bags x 50kg ANFO. By that Time 3 blenders had completely broken down and one more was partly dysfunctional.

Дата добавления: 2015-07-17